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23251325 = 521754709
BaseRepresentation
bin101100010110…
…0100101111101
31121202021211012
41120230211331
521423020300
62150205005
7401430056
oct130544575
947667735
1023251325
1112141079
127953765
134a812a6
14313372d
152094435
hex162c97d

23251325 has 12 divisors (see below), whose sum is σ = 30528180. Its totient is φ = 17506560.

The previous prime is 23251313. The next prime is 23251331. The reversal of 23251325 is 52315232.

It can be written as a sum of positive squares in 6 ways, for example, as 76729 + 23174596 = 277^2 + 4814^2 .

It is not a de Polignac number, because 23251325 - 212 = 23247229 is a prime.

It is a super-2 number, since 2×232513252 = 1081248228511250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23251325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26930 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (2544015).

Almost surely, 223251325 is an apocalyptic number.

23251325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23251325 is a deficient number, since it is larger than the sum of its proper divisors (7276855).

23251325 is a wasteful number, since it uses less digits than its factorization.

23251325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54736 (or 54731 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 23251325 is about 4821.9627746386. The cubic root of 23251325 is about 285.4187953974.

Adding to 23251325 its reverse (52315232), we get a palindrome (75566557).

The spelling of 23251325 in words is "twenty-three million, two hundred fifty-one thousand, three hundred twenty-five".

Divisors: 1 5 17 25 85 425 54709 273545 930053 1367725 4650265 23251325