725131607 has 4 divisors (see below), whose sum is σ = 725830560. Its totient is φ = 724432656.

The previous prime is 725131601. The next prime is 725131619. The reversal of 725131607 is 706131527.

725131607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725131607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725131601) 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, 347918 + ... + 349995.

It is an arithmetic number, because the mean of its divisors is an integer number (181457640).

Almost surely, 2^725131607 is an apocalyptic number.

725131607 is a deficient number, since it is larger than the sum of its proper divisors (698953).

725131607 is a wasteful number, since it uses less digits than its factorization.

725131607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698952.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 725131607 is about 26928.2678054122. The cubic root of 725131607 is about 898.4052445657.

The spelling of 725131607 in words is "seven hundred twenty-five million, one hundred thirty-one thousand, six hundred seven".