66255025 has 12 divisors (see below), whose sum is σ = 82705024. Its totient is φ = 52650000.

The previous prime is 66255017. The next prime is 66255031. The reversal of 66255025 is 52055266.

It is not a de Polignac number, because 66255025 - 2³ = 66255017 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5001 + ... + 12550.

Almost surely, 2^66255025 is an apocalyptic number.

It is an amenable number.

66255025 is a deficient number, since it is larger than the sum of its proper divisors (16449999).

66255025 is a wasteful number, since it uses less digits than its factorization.

66255025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17712 (or 17707 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 66255025 is about 8139.7189754930. The cubic root of 66255025 is about 404.6438468290.

The spelling of 66255025 in words is "sixty-six million, two hundred fifty-five thousand, twenty-five".