725901506 has 24 divisors (see below), whose sum is σ = 1198404480. Its totient is φ = 329523480.

The previous prime is 725901499. The next prime is 725901521. The reversal of 725901506 is 605109527.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249995 + ... + 252881.

It is an arithmetic number, because the mean of its divisors is an integer number (49933520).

Almost surely, 2^725901506 is an apocalyptic number.

725901506 is a deficient number, since it is larger than the sum of its proper divisors (472502974).

725901506 is a wasteful number, since it uses less digits than its factorization.

725901506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950 (or 3939 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 725901506 is about 26942.5593810239. The cubic root of 725901506 is about 898.7230887761.

The spelling of 725901506 in words is "seven hundred twenty-five million, nine hundred one thousand, five hundred six".