725513577 has 4 divisors (see below), whose sum is σ = 967351440. Its totient is φ = 483675716.

The previous prime is 725513567. The next prime is 725513599. The reversal of 725513577 is 775315527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725513577 - 2¹¹ = 725511529 is a prime.

It is a super-2 number, since 2×725513577² = 1052739900822669858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725513557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120918927 + ... + 120918932.

It is an arithmetic number, because the mean of its divisors is an integer number (241837860).

Almost surely, 2^725513577 is an apocalyptic number.

It is an amenable number.

725513577 is a deficient number, since it is larger than the sum of its proper divisors (241837863).

725513577 is a wasteful number, since it uses less digits than its factorization.

725513577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241837862.

The product of its digits is 257250, while the sum is 42.

The square root of 725513577 is about 26935.3592328003. The cubic root of 725513577 is about 898.5629647233.

The spelling of 725513577 in words is "seven hundred twenty-five million, five hundred thirteen thousand, five hundred seventy-seven".