665014025 has 24 divisors (see below), whose sum is σ = 889776384. Its totient is φ = 490132800.

The previous prime is 665013991. The next prime is 665014039. The reversal of 665014025 is 520410566.

665014025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665014025 - 2⁶ = 665013961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195590 + ... + 198960.

It is an arithmetic number, because the mean of its divisors is an integer number (37074016).

Almost surely, 2^665014025 is an apocalyptic number.

665014025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

665014025 is a deficient number, since it is larger than the sum of its proper divisors (224762359).

665014025 is a wasteful number, since it uses less digits than its factorization.

665014025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001 (or 3996 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 665014025 is about 25787.8658481077. The cubic root of 665014025 is about 872.8580096898.

The spelling of 665014025 in words is "six hundred sixty-five million, fourteen thousand, twenty-five".