25902940320 has 384 divisors, whose sum is σ = 94383636480. Its totient is φ = 6627640320.

The previous prime is 25902940303. The next prime is 25902940337. The reversal of 25902940320 is 2304920952.

25902940320 is a `hidden beast` number, since 2 + 590 + 2 + 9 + 40 + 3 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (25902940303) and next prime (25902940337).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17007079 + ... + 17008601.

It is an arithmetic number, because the mean of its divisors is an integer number (245790720).

Almost surely, 2^25902940320 is an apocalyptic number.

25902940320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25902940320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47191818240).

25902940320 is an abundant number, since it is smaller than the sum of its proper divisors (68480696160).

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

25902940320 is a wasteful number, since it uses less digits than its factorization.

25902940320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 25902940320 in words is "twenty-five billion, nine hundred two million, nine hundred forty thousand, three hundred twenty".