25431766404 has 96 divisors (see below), whose sum is σ = 66687667200. Its totient is φ = 7476604800.

The previous prime is 25431766357. The next prime is 25431766483. The reversal of 25431766404 is 40466713452.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830689 + ... + 860759.

It is an arithmetic number, because the mean of its divisors is an integer number (694663200).

Almost surely, 2^25431766404 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 25431766404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33343833600).

25431766404 is an abundant number, since it is smaller than the sum of its proper divisors (41255900796).

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

25431766404 is a wasteful number, since it uses less digits than its factorization.

25431766404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30281 (or 30279 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 25431766404 in words is "twenty-five billion, four hundred thirty-one million, seven hundred sixty-six thousand, four hundred four".