665003025 has 72 divisors (see below), whose sum is σ = 1316165760. Its totient is φ = 319249920.

The previous prime is 665003023. The next prime is 665003033. The reversal of 665003025 is 520300566.

665003025 is a `hidden beast` number, since 6 + 650 + 0 + 3 + 0 + 2 + 5 = 666.

It is not a de Polignac number, because 665003025 - 2¹ = 665003023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 665003025.

It is not an unprimeable number, because it can be changed into a prime (665003023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 84196 + ... + 91754.

It is an arithmetic number, because the mean of its divisors is an integer number (18280080).

Almost surely, 2^665003025 is an apocalyptic number.

It is an amenable number.

665003025 is a deficient number, since it is larger than the sum of its proper divisors (651162735).

665003025 is a wasteful number, since it uses less digits than its factorization.

665003025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615 (or 7607 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 665003025 is about 25787.6525686228. The cubic root of 665003025 is about 872.8531970138.

The spelling of 665003025 in words is "six hundred sixty-five million, three thousand, twenty-five".