725515 has 16 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 470880.

The previous prime is 725507. The next prime is 725519. The reversal of 725515 is 515527.

It is a happy number.

It is not a de Polignac number, because 725515 - 2³ = 725507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725515.

It is not an unprimeable number, because it can be changed into a prime (725519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 1210.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2⁷²⁵⁵¹⁵ is an apocalyptic number.

725515 is a deficient number, since it is larger than the sum of its proper divisors (322805).

725515 is a wasteful number, since it uses less digits than its factorization.

725515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

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

The square root of 725515 is about 851.7716830231. The cubic root of 725515 is about 89.8563552194.

The spelling of 725515 in words is "seven hundred twenty-five thousand, five hundred fifteen".