25231500388 has 12 divisors (see below), whose sum is σ = 46074913920. Its totient is φ = 12067239272.

The previous prime is 25231500383. The next prime is 25231500389. The reversal of 25231500388 is 88300513252.

It is a super-2 number, since 2×25231500388² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25231500383) 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 3 ways as a sum of consecutive naturals, for example, 137127628 + ... + 137127811.

It is an arithmetic number, because the mean of its divisors is an integer number (3839576160).

Almost surely, 2^25231500388 is an apocalyptic number.

It is an amenable number.

25231500388 is a deficient number, since it is larger than the sum of its proper divisors (20843413532).

25231500388 is a wasteful number, since it uses less digits than its factorization.

25231500388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274255466 (or 274255464 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 25231500388 in words is "twenty-five billion, two hundred thirty-one million, five hundred thousand, three hundred eighty-eight".