25257412404 has 108 divisors (see below), whose sum is σ = 74484656064. Its totient is φ = 7195432608.

The previous prime is 25257412361. The next prime is 25257412429. The reversal of 25257412404 is 40421475252.

25257412404 is a `hidden beast` number, since 2 + 525 + 7 + 4 + 124 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 591477 + ... + 632739.

Almost surely, 2^25257412404 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 25257412404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37242328032).

25257412404 is an abundant number, since it is smaller than the sum of its proper divisors (49227243660).

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

25257412404 is a wasteful number, since it uses less digits than its factorization.

25257412404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41634 (or 41622 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 36.

Adding to 25257412404 its reverse (40421475252), we get a palindrome (65678887656).

The spelling of 25257412404 in words is "twenty-five billion, two hundred fifty-seven million, four hundred twelve thousand, four hundred four".