22510525 has 24 divisors (see below), whose sum is σ = 29406600. Its totient is φ = 17068800.

The previous prime is 22510519. The next prime is 22510529. The reversal of 22510525 is 52501522.

It can be written as a sum of positive squares in 12 ways, for example, as 8357881 + 14152644 = 2891^2 + 3762^2 .

It is not a de Polignac number, because 22510525 - 2⁵ = 22510493 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 22510496 and 22510505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22510529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43971 + ... + 44479.

It is an arithmetic number, because the mean of its divisors is an integer number (1225275).

Almost surely, 2^22510525 is an apocalyptic number.

22510525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22510525 is a deficient number, since it is larger than the sum of its proper divisors (6896075).

22510525 is a wasteful number, since it uses less digits than its factorization.

22510525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22510525 is about 4744.5257929534. The cubic root of 22510525 is about 282.3548213765.

The spelling of 22510525 in words is "twenty-two million, five hundred ten thousand, five hundred twenty-five".