25311983 has 16 divisors (see below), whose sum is σ = 27622080. Its totient is φ = 23122176.

The previous prime is 25311967. The next prime is 25312019. The reversal of 25311983 is 38911352.

It is not a de Polignac number, because 25311983 - 2⁴ = 25311967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25311953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91241 + ... + 91517.

It is an arithmetic number, because the mean of its divisors is an integer number (1726380).

Almost surely, 2^25311983 is an apocalyptic number.

25311983 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25311983 is a deficient number, since it is larger than the sum of its proper divisors (2310097).

25311983 is a wasteful number, since it uses less digits than its factorization.

25311983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its digits is 6480, while the sum is 32.

The square root of 25311983 is about 5031.1015692391. The cubic root of 25311983 is about 293.6130740750.

The spelling of 25311983 in words is "twenty-five million, three hundred eleven thousand, nine hundred eighty-three".