25918954425 has 192 divisors, whose sum is σ = 58787904000. Its totient is φ = 10902574080.

The previous prime is 25918954333. The next prime is 25918954429. The reversal of 25918954425 is 52445981952.

25918954425 is a `hidden beast` number, since 2 + 5 + 91 + 8 + 9 + 544 + 2 + 5 = 666.

It is not a de Polignac number, because 25918954425 - 2⁸ = 25918954169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25918954429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 31264911 + ... + 31265739.

It is an arithmetic number, because the mean of its divisors is an integer number (306187000).

Almost surely, 2^25918954425 is an apocalyptic number.

25918954425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25918954425 is an abundant number, since it is smaller than the sum of its proper divisors (32868949575).

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

25918954425 is a wasteful number, since it uses less digits than its factorization.

25918954425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1366 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The spelling of 25918954425 in words is "twenty-five billion, nine hundred eighteen million, nine hundred fifty-four thousand, four hundred twenty-five".