725223515 has 8 divisors (see below), whose sum is σ = 878718048. Its totient is φ = 574545600.

The previous prime is 725223487. The next prime is 725223523. The reversal of 725223515 is 515322527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725223515 - 2⁸ = 725223259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703586 + ... + 704615.

It is an arithmetic number, because the mean of its divisors is an integer number (109839756).

Almost surely, 2^725223515 is an apocalyptic number.

725223515 is a deficient number, since it is larger than the sum of its proper divisors (153494533).

725223515 is a wasteful number, since it uses less digits than its factorization.

725223515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408309.

The product of its digits is 21000, while the sum is 32.

The square root of 725223515 is about 26929.9742851715. The cubic root of 725223515 is about 898.4431995797.

The spelling of 725223515 in words is "seven hundred twenty-five million, two hundred twenty-three thousand, five hundred fifteen".