311425925 has 24 divisors (see below), whose sum is σ = 403534440. Its totient is φ = 238112000.

The previous prime is 311425921. The next prime is 311425931. The reversal of 311425925 is 529524113.

311425925 = 12478² + 12479².

It can be written as a sum of positive squares in 12 ways, for example, as 61058596 + 250367329 = 7814^2 + 15823^2 .

It is not a de Polignac number, because 311425925 - 2² = 311425921 is a prime.

It is a super-2 number, since 2×311425925² = 193972213524211250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 311425891 and 311425900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311425921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71099 + ... + 75351.

It is an arithmetic number, because the mean of its divisors is an integer number (16813935).

Almost surely, 2^311425925 is an apocalyptic number.

311425925 is the 12479-th centered square number.

It is an amenable number.

311425925 is a deficient number, since it is larger than the sum of its proper divisors (92108515).

311425925 is a wasteful number, since it uses less digits than its factorization.

311425925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393 (or 4388 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 311425925 is about 17647.2639522392. The cubic root of 311425925 is about 677.8260482259.

The spelling of 311425925 in words is "three hundred eleven million, four hundred twenty-five thousand, nine hundred twenty-five".