25012098531 has 24 divisors (see below), whose sum is σ = 42405758304. Its totient is φ = 13906339200.

The previous prime is 25012098407. The next prime is 25012098539. The reversal of 25012098531 is 13589021052.

25012098531 is a `hidden beast` number, since 25 + 0 + 12 + 0 + 98 + 531 = 666.

It is not a de Polignac number, because 25012098531 - 2²² = 25007904227 is a prime.

It is a super-2 number, since 2×25012098531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25012098539) 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, 5362770 + ... + 5367431.

It is an arithmetic number, because the mean of its divisors is an integer number (1766906596).

Almost surely, 2^25012098531 is an apocalyptic number.

25012098531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25012098531 is a deficient number, since it is larger than the sum of its proper divisors (17393659773).

25012098531 is a wasteful number, since it uses less digits than its factorization.

25012098531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10730251 (or 10730248 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 25012098531 in words is "twenty-five billion, twelve million, ninety-eight thousand, five hundred thirty-one".