25291392048 has 400 divisors, whose sum is σ = 84051807840. Its totient is φ = 7273193472.

The previous prime is 25291392041. The next prime is 25291392073. The reversal of 25291392048 is 84029319252.

25291392048 is a `hidden beast` number, since 252 + 9 + 1 + 392 + 0 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25291391994 and 25291392012.

It is not an unprimeable number, because it can be changed into a prime (25291392041) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 65016238 + ... + 65016626.

Almost surely, 2^25291392048 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 25291392048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42025903920).

25291392048 is an abundant number, since it is smaller than the sum of its proper divisors (58760415792).

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

25291392048 is a wasteful number, since it uses less digits than its factorization.

25291392048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 25291392048 in words is "twenty-five billion, two hundred ninety-one million, three hundred ninety-two thousand, forty-eight".