25537864 has 32 divisors (see below), whose sum is σ = 54043200. Its totient is φ = 11206720.

The previous prime is 25537861. The next prime is 25537871. The reversal of 25537864 is 46873552.

It is not an unprimeable number, because it can be changed into a prime (25537861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2452 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (1688850).

Almost surely, 2^25537864 is an apocalyptic number.

It is an amenable number.

25537864 is an abundant number, since it is smaller than the sum of its proper divisors (28505336).

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

25537864 is a wasteful number, since it uses less digits than its factorization.

25537864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053 (or 10049 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 25537864 is about 5053.5001731473. The cubic root of 25537864 is about 294.4838777718.

The spelling of 25537864 in words is "twenty-five million, five hundred thirty-seven thousand, eight hundred sixty-four".