331729625 has 16 divisors (see below), whose sum is σ = 414545040. Its totient is φ = 265033600.

The previous prime is 331729591. The next prime is 331729633. The reversal of 331729625 is 526927133.

It can be written as a sum of positive squares in 8 ways, for example, as 299705344 + 32024281 = 17312^2 + 5659^2 .

It is not a de Polignac number, because 331729625 - 2⁶ = 331729561 is a prime.

It is a super-2 number, since 2×331729625² = 220089088205281250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137429 + ... + 139821.

It is an arithmetic number, because the mean of its divisors is an integer number (25909065).

Almost surely, 2^331729625 is an apocalyptic number.

It is an amenable number.

331729625 is a deficient number, since it is larger than the sum of its proper divisors (82815415).

331729625 is a wasteful number, since it uses less digits than its factorization.

331729625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517 (or 3507 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 331729625 is about 18213.4462691716. The cubic root of 331729625 is about 692.2475370730.

The spelling of 331729625 in words is "three hundred thirty-one million, seven hundred twenty-nine thousand, six hundred twenty-five".