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25026428 = 2271575693
BaseRepresentation
bin101111101110…
…1111101111100
31202002110210202
41133131331330
522401321203
62252223032
7422502230
oct137357574
952073722
1025026428
11131437a9
12846aa78
13525324b
1434765c0
1522e5388
hex17ddf7c

25026428 has 24 divisors (see below), whose sum is σ = 50380512. Its totient is φ = 10655424.

The previous prime is 25026427. The next prime is 25026433. The reversal of 25026428 is 82462052.

It is a self number, because there is not a number n which added to its sum of digits gives 25026428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25026427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550 + ... + 7242.

It is an arithmetic number, because the mean of its divisors is an integer number (2099188).

Almost surely, 225026428 is an apocalyptic number.

25026428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25026428 is an abundant number, since it is smaller than the sum of its proper divisors (25354084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25026428 is a wasteful number, since it uses less digits than its factorization.

25026428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 25026428 is about 5002.6421019297. The cubic root of 25026428 is about 292.5047721237.

The spelling of 25026428 in words is "twenty-five million, twenty-six thousand, four hundred twenty-eight".

Divisors: 1 2 4 7 14 28 157 314 628 1099 2198 4396 5693 11386 22772 39851 79702 159404 893801 1787602 3575204 6256607 12513214 25026428