725574506 has 8 divisors (see below), whose sum is σ = 1099137924. Its totient is φ = 359195200.

The previous prime is 725574503. The next prime is 725574511. The reversal of 725574506 is 605475527.

It can be written as a sum of positive squares in 2 ways, for example, as 638320225 + 87254281 = 25265^2 + 9341^2 .

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

It is not an unprimeable number, because it can be changed into a prime (725574503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795775 + ... + 1796178.

Almost surely, 2^725574506 is an apocalyptic number.

725574506 is a deficient number, since it is larger than the sum of its proper divisors (373563418).

725574506 is a wasteful number, since it uses less digits than its factorization.

725574506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592056.

The product of its (nonzero) digits is 294000, while the sum is 41.

The square root of 725574506 is about 26936.4902316542. The cubic root of 725574506 is about 898.5881179444.

The spelling of 725574506 in words is "seven hundred twenty-five million, five hundred seventy-four thousand, five hundred six".