331978625 has 48 divisors (see below), whose sum is σ = 466083072. Its totient is φ = 235796000.

The previous prime is 331978613. The next prime is 331978637. The reversal of 331978625 is 526879133.

It is an interprime number because it is at equal distance from previous prime (331978613) and next prime (331978637).

It is not a de Polignac number, because 331978625 - 2⁴ = 331978609 is a prime.

It is a super-2 number, since 2×331978625² = 220419614913781250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 710642 + ... + 711108.

It is an arithmetic number, because the mean of its divisors is an integer number (9710064).

Almost surely, 2^331978625 is an apocalyptic number.

It is an amenable number.

331978625 is a deficient number, since it is larger than the sum of its proper divisors (134104447).

331978625 is a wasteful number, since it uses less digits than its factorization.

331978625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 530 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 331978625 is about 18220.2805960830. The cubic root of 331978625 is about 692.4206966927.

The spelling of 331978625 in words is "three hundred thirty-one million, nine hundred seventy-eight thousand, six hundred twenty-five".