25896520 has 32 divisors (see below), whose sum is σ = 62750520. Its totient is φ = 9561600.

The previous prime is 25896509. The next prime is 25896527. The reversal of 25896520 is 2569852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 11410884 = 3806^2 + 3378^2 .

It is a super-2 number, since 2×25896520² = 1341259496220800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25896520.

It is not an unprimeable number, because it can be changed into a prime (25896527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24381 + ... + 25420.

Almost surely, 2^25896520 is an apocalyptic number.

25896520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25896520 is an abundant number, since it is smaller than the sum of its proper divisors (36854000).

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

25896520 is a wasteful number, since it uses less digits than its factorization.

25896520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49825 (or 49821 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 25896520 is about 5088.8623483054. The cubic root of 25896520 is about 295.8560597939.

The spelling of 25896520 in words is "twenty-five million, eight hundred ninety-six thousand, five hundred twenty".