665254252 has 12 divisors (see below), whose sum is σ = 1253748496. Its totient is φ = 307040400.

The previous prime is 665254241. The next prime is 665254267. The reversal of 665254252 is 252452566.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396624 + ... + 6396727.

Almost surely, 2^665254252 is an apocalyptic number.

It is an amenable number.

665254252 is a deficient number, since it is larger than the sum of its proper divisors (588494244).

665254252 is a wasteful number, since it uses less digits than its factorization.

665254252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793368 (or 12793366 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The square root of 665254252 is about 25792.5231801776. The cubic root of 665254252 is about 872.9630996126.

The spelling of 665254252 in words is "six hundred sixty-five million, two hundred fifty-four thousand, two hundred fifty-two".