725417678 has 16 divisors (see below), whose sum is σ = 1112792256. Its totient is φ = 354538080.

The previous prime is 725417669. The next prime is 725417681. The reversal of 725417678 is 876714527.

It is a happy number.

It is a Curzon number.

It is a congruent 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, 16100 + ... + 41352.

It is an arithmetic number, because the mean of its divisors is an integer number (69549516).

Almost surely, 2^725417678 is an apocalyptic number.

725417678 is a deficient number, since it is larger than the sum of its proper divisors (387374578).

725417678 is a wasteful number, since it uses less digits than its factorization.

725417678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25579.

The product of its digits is 658560, while the sum is 47.

The square root of 725417678 is about 26933.5790046551. The cubic root of 725417678 is about 898.5233720405.

The spelling of 725417678 in words is "seven hundred twenty-five million, four hundred seventeen thousand, six hundred seventy-eight".