25135717068 has 192 divisors, whose sum is σ = 81672944640. Its totient is φ = 6494515200.

The previous prime is 25135716997. The next prime is 25135717091. The reversal of 25135717068 is 86071753152.

It is a happy number.

25135717068 is a `hidden beast` number, since 2 + 5 + 1 + 3 + 571 + 70 + 6 + 8 = 666.

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, 1597158 + ... + 1612818.

It is an arithmetic number, because the mean of its divisors is an integer number (425379920).

Almost surely, 2^25135717068 is an apocalyptic number.

25135717068 is a gapful number since it is divisible by the number (28) 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 25135717068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40836472320).

25135717068 is an abundant number, since it is smaller than the sum of its proper divisors (56537227572).

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

25135717068 is a wasteful number, since it uses less digits than its factorization.

25135717068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885 (or 15877 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 25135717068 in words is "twenty-five billion, one hundred thirty-five million, seven hundred seventeen thousand, sixty-eight".