25731822368 has 54 divisors (see below), whose sum is σ = 58945018923. Its totient is φ = 11025201600.

The previous prime is 25731822359. The next prime is 25731822371. The reversal of 25731822368 is 86322813752.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 12865911184 + 12865911184 = 113428^2 + 113428^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113428.

It is a super-3 number, since 3×25731822368³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6349943 + ... + 6353993.

Almost surely, 2^25731822368 is an apocalyptic number.

25731822368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25731822368 is an abundant number, since it is smaller than the sum of its proper divisors (33213196555).

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

25731822368 is an frugal number, since it uses more digits than its factorization.

25731822368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 4060 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The spelling of 25731822368 in words is "twenty-five billion, seven hundred thirty-one million, eight hundred twenty-two thousand, three hundred sixty-eight".