331782725 has 6 divisors (see below), whose sum is σ = 411410610. Its totient is φ = 265426160.

The previous prime is 331782719. The next prime is 331782733. The reversal of 331782725 is 527287133.

It can be written as a sum of positive squares in 3 ways, for example, as 63904036 + 267878689 = 7994^2 + 16367^2 .

It is not a de Polignac number, because 331782725 - 2⁴ = 331782709 is a prime.

It is a super-2 number, since 2×331782725² = 220159553216851250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6635630 + ... + 6635679.

It is an arithmetic number, because the mean of its divisors is an integer number (68568435).

Almost surely, 2^331782725 is an apocalyptic number.

It is an amenable number.

331782725 is a deficient number, since it is larger than the sum of its proper divisors (79627885).

331782725 is a wasteful number, since it uses less digits than its factorization.

331782725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13271319 (or 13271314 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 331782725 is about 18214.9039250829. The cubic root of 331782725 is about 692.2844711505.

The spelling of 331782725 in words is "three hundred thirty-one million, seven hundred eighty-two thousand, seven hundred twenty-five".