725507519 has 8 divisors (see below), whose sum is σ = 796505808. Its totient is φ = 655349760.

The previous prime is 725507479. The next prime is 725507527. The reversal of 725507519 is 915705527.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725507519 is a prime.

It is a super-2 number, since 2×725507519² = 1052722320251070722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725507569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208322 + ... + 211775.

It is an arithmetic number, because the mean of its divisors is an integer number (99563226).

Almost surely, 2^725507519 is an apocalyptic number.

725507519 is a deficient number, since it is larger than the sum of its proper divisors (70998289).

725507519 is a wasteful number, since it uses less digits than its factorization.

725507519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420265.

The product of its (nonzero) digits is 110250, while the sum is 41.

The square root of 725507519 is about 26935.2467781530. The cubic root of 725507519 is about 898.5604637319.

The spelling of 725507519 in words is "seven hundred twenty-five million, five hundred seven thousand, five hundred nineteen".