66272925 has 12 divisors (see below), whose sum is σ = 109571360. Its totient is φ = 35345520.

The previous prime is 66272909. The next prime is 66272929. The reversal of 66272925 is 52927266.

It is a happy number.

It is not a de Polignac number, because 66272925 - 2⁴ = 66272909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66272929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441745 + ... + 441894.

Almost surely, 2^66272925 is an apocalyptic number.

It is an amenable number.

66272925 is a deficient number, since it is larger than the sum of its proper divisors (43298435).

66272925 is a wasteful number, since it uses less digits than its factorization.

66272925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883652 (or 883647 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 66272925 is about 8140.8184477975. The cubic root of 66272925 is about 404.6802841794.

The spelling of 66272925 in words is "sixty-six million, two hundred seventy-two thousand, nine hundred twenty-five".