725227565 has 16 divisors (see below), whose sum is σ = 946374192. Its totient is φ = 531293184.

The previous prime is 725227553. The next prime is 725227577. The reversal of 725227565 is 565722527.

It is an interprime number because it is at equal distance from previous prime (725227553) and next prime (725227577).

It can be written as a sum of positive squares in 8 ways, for example, as 249071524 + 476156041 = 15782^2 + 21821^2 .

It is a cyclic number.

It is not a de Polignac number, because 725227565 - 2⁸ = 725227309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112154 + ... + 118443.

It is an arithmetic number, because the mean of its divisors is an integer number (59148387).

Almost surely, 2^725227565 is an apocalyptic number.

It is an amenable number.

725227565 is a deficient number, since it is larger than the sum of its proper divisors (221146627).

725227565 is a wasteful number, since it uses less digits than its factorization.

725227565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230656.

The product of its digits is 294000, while the sum is 41.

The square root of 725227565 is about 26930.0494800882. The cubic root of 725227565 is about 898.4448720242. Note that the first 3 decimals are identical.

The spelling of 725227565 in words is "seven hundred twenty-five million, two hundred twenty-seven thousand, five hundred sixty-five".