665132025 has 24 divisors (see below), whose sum is σ = 1100529760. Its totient is φ = 354464640.

The previous prime is 665132011. The next prime is 665132051. The reversal of 665132025 is 520231566.

It is not a de Polignac number, because 665132025 - 2¹⁴ = 665115641 is a prime.

It is a super-2 number, since 2×665132025² = 884801221361201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665131983 and 665132001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128946 + ... + 134004.

Almost surely, 2^665132025 is an apocalyptic number.

It is an amenable number.

665132025 is a deficient number, since it is larger than the sum of its proper divisors (435397735).

665132025 is a wasteful number, since it uses less digits than its factorization.

665132025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825 (or 6820 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 665132025 is about 25790.1536443659. The cubic root of 665132025 is about 872.9096332395.

The spelling of 665132025 in words is "six hundred sixty-five million, one hundred thirty-two thousand, twenty-five".