25040864 has 48 divisors (see below), whose sum is σ = 52690176. Its totient is φ = 11673600.

The previous prime is 25040863. The next prime is 25040903. The reversal of 25040864 is 46804052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040863) 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, 103784 + ... + 104024.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^25040864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25040864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26345088).

25040864 is an abundant number, since it is smaller than the sum of its proper divisors (27649312).

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

25040864 is a wasteful number, since it uses less digits than its factorization.

25040864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 451 counting only the distinct ones).

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

The square root of 25040864 is about 5004.0847314969. The cubic root of 25040864 is about 292.5610031773.

It can be divided in two parts, 250 and 40864, that added together give a palindrome (41114).

The spelling of 25040864 in words is "twenty-five million, forty thousand, eight hundred sixty-four".