25404707832 has 128 divisors (see below), whose sum is σ = 75791116800. Its totient is φ = 6942555648.

The previous prime is 25404707831. The next prime is 25404707851. The reversal of 25404707832 is 23870740452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404707831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496938 + ... + 545670.

It is an arithmetic number, because the mean of its divisors is an integer number (592118100).

Almost surely, 2^25404707832 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 25404707832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37895558400).

25404707832 is an abundant number, since it is smaller than the sum of its proper divisors (50386408968).

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

25404707832 is a wasteful number, since it uses less digits than its factorization.

25404707832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48885 (or 48881 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 25404707832 in words is "twenty-five billion, four hundred four million, seven hundred seven thousand, eight hundred thirty-two".