725500015 has 4 divisors (see below), whose sum is σ = 870600024. Its totient is φ = 580400008.

The previous prime is 725499991. The next prime is 725500021. The reversal of 725500015 is 510005527.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725500015 - 2¹⁵ = 725467247 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 3 ways as a sum of consecutive naturals, for example, 72549997 + ... + 72550006.

It is an arithmetic number, because the mean of its divisors is an integer number (217650006).

Almost surely, 2^725500015 is an apocalyptic number.

725500015 is a deficient number, since it is larger than the sum of its proper divisors (145100009).

725500015 is a wasteful number, since it uses less digits than its factorization.

725500015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145100008.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 725500015 is about 26935.1074807583. The cubic root of 725500015 is about 898.5573657530.

The spelling of 725500015 in words is "seven hundred twenty-five million, five hundred thousand, fifteen".