25925731983 has 12 divisors (see below), whose sum is σ = 38460395688. Its totient is φ = 16816690800.

The previous prime is 25925731967. The next prime is 25925731991. The reversal of 25925731983 is 38913752952.

25925731983 is a `hidden beast` number, since 2 + 59 + 2 + 573 + 19 + 8 + 3 = 666.

It is not a de Polignac number, because 25925731983 - 2⁴ = 25925731967 is a prime.

It is a super-2 number, since 2×25925731983² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25925731913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38927193 + ... + 38927858.

It is an arithmetic number, because the mean of its divisors is an integer number (3205032974).

Almost surely, 2^25925731983 is an apocalyptic number.

25925731983 is a deficient number, since it is larger than the sum of its proper divisors (12534663705).

25925731983 is a wasteful number, since it uses less digits than its factorization.

25925731983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77855094 (or 77855091 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 25925731983 in words is "twenty-five billion, nine hundred twenty-five million, seven hundred thirty-one thousand, nine hundred eighty-three".