25992421371 has 168 divisors, whose sum is σ = 50113927584. Its totient is φ = 13364144640.

The previous prime is 25992421361. The next prime is 25992421457. The reversal of 25992421371 is 17312429952.

25992421371 is a `hidden beast` number, since 2 + 599 + 2 + 4 + 21 + 37 + 1 = 666.

It is not a de Polignac number, because 25992421371 - 2⁶ = 25992421307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25992421321) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 13965981 + ... + 13967841.

It is an arithmetic number, because the mean of its divisors is an integer number (298297188).

Almost surely, 2^25992421371 is an apocalyptic number.

25992421371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25992421371 is a deficient number, since it is larger than the sum of its proper divisors (24121506213).

25992421371 is a wasteful number, since it uses less digits than its factorization.

25992421371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 1911 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 25992421371 in words is "twenty-five billion, nine hundred ninety-two million, four hundred twenty-one thousand, three hundred seventy-one".