25147790976 has 192 divisors, whose sum is σ = 84769515360. Its totient is φ = 6531840000.

The previous prime is 25147790909. The next prime is 25147790977. The reversal of 25147790976 is 67909774152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×25147790976² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25147790977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146226 + ... + 267726.

Almost surely, 2^25147790976 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 25147790976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42384757680).

25147790976 is an abundant number, since it is smaller than the sum of its proper divisors (59621724384).

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

25147790976 is a wasteful number, since it uses less digits than its factorization.

25147790976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121543 (or 121524 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 57.

The spelling of 25147790976 in words is "twenty-five billion, one hundred forty-seven million, seven hundred ninety thousand, nine hundred seventy-six".