666073025 has 24 divisors (see below), whose sum is σ = 871224000. Its totient is φ = 503755200.

The previous prime is 666073021. The next prime is 666073027. The reversal of 666073025 is 520370666.

It is not a de Polignac number, because 666073025 - 2² = 666073021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666073021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283355 + ... + 285695.

It is an arithmetic number, because the mean of its divisors is an integer number (36301000).

Almost surely, 2^666073025 is an apocalyptic number.

It is an amenable number.

666073025 is a deficient number, since it is larger than the sum of its proper divisors (205150975).

666073025 is a wasteful number, since it uses less digits than its factorization.

666073025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 666073025 is about 25808.3905929835. The cubic root of 666073025 is about 873.3210908520.

The spelling of 666073025 in words is "six hundred sixty-six million, seventy-three thousand, twenty-five".