725224513 has 8 divisors (see below), whose sum is σ = 784715456. Its totient is φ = 666262800.

The previous prime is 725224499. The next prime is 725224543. The reversal of 725224513 is 315422527.

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

It is a cyclic number.

It is not a de Polignac number, because 725224513 - 2⁵ = 725224481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725224543) 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, 129453 + ... + 134938.

It is an arithmetic number, because the mean of its divisors is an integer number (98089432).

Almost surely, 2^725224513 is an apocalyptic number.

It is an amenable number.

725224513 is a deficient number, since it is larger than the sum of its proper divisors (59490943).

725224513 is a wasteful number, since it uses less digits than its factorization.

725224513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264615.

The product of its digits is 16800, while the sum is 31.

The square root of 725224513 is about 26929.9928147038. The cubic root of 725224513 is about 898.4436117037.

The spelling of 725224513 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, five hundred thirteen".