25813415376 has 120 divisors (see below), whose sum is σ = 82793093760. Its totient is φ = 7354614528.

The previous prime is 25813415357. The next prime is 25813415387. The reversal of 25813415376 is 67351431852.

It is a happy number.

25813415376 is a `hidden beast` number, since 2 + 5 + 81 + 34 + 1 + 537 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326206 + ... + 397538.

It is an arithmetic number, because the mean of its divisors is an integer number (689942448).

Almost surely, 2^25813415376 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 25813415376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41396546880).

25813415376 is an abundant number, since it is smaller than the sum of its proper divisors (56979678384).

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

25813415376 is a wasteful number, since it uses less digits than its factorization.

25813415376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71713 (or 71704 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 25813415376 in words is "twenty-five billion, eight hundred thirteen million, four hundred fifteen thousand, three hundred seventy-six".