662805025 has 27 divisors (see below), whose sum is σ = 870624243. Its totient is φ = 500482800.

The previous prime is 662805019. The next prime is 662805067. The reversal of 662805025 is 520508266.

The square root of 662805025 is 25745.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 238609809 + 424195216 = 15447^2 + 20596^2 .

It is not a de Polignac number, because 662805025 - 2¹⁹ = 662280737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2445640 + ... + 2445910.

Almost surely, 2^662805025 is an apocalyptic number.

662805025 is the 25745-th square number.

662805025 is the 12873-rd centered octagonal number.

It is an amenable number.

662805025 is a deficient number, since it is larger than the sum of its proper divisors (207819218).

662805025 is an equidigital number, since it uses as much as digits as its factorization.

662805025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The cubic root of 662805025 is about 871.8904700860.

The spelling of 662805025 in words is "six hundred sixty-two million, eight hundred five thousand, twenty-five".