665025352 has 8 divisors (see below), whose sum is σ = 1246922550. Its totient is φ = 332512672.

The previous prime is 665025349. The next prime is 665025359. The reversal of 665025352 is 253520566.

It can be written as a sum of positive squares in only one way, i.e., 347971716 + 317053636 = 18654^2 + 17806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (665025359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41564077 + ... + 41564092.

Almost surely, 2^665025352 is an apocalyptic number.

It is an amenable number.

665025352 is a deficient number, since it is larger than the sum of its proper divisors (581897198).

665025352 is a wasteful number, since it uses less digits than its factorization.

665025352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83128175 (or 83128171 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 665025352 is about 25788.0854659666. The cubic root of 665025352 is about 872.8629653780.

The spelling of 665025352 in words is "six hundred sixty-five million, twenty-five thousand, three hundred fifty-two".