764731725 has 24 divisors (see below), whose sum is σ = 1298532960. Its totient is φ = 396832320.

The previous prime is 764731679. The next prime is 764731729. The reversal of 764731725 is 527137467.

764731725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 764731725 - 2⁶ = 764731661 is a prime.

It is a super-3 number, since 3×764731725³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764731729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135015 + ... + 140564.

It is an arithmetic number, because the mean of its divisors is an integer number (54105540).

Almost surely, 2^764731725 is an apocalyptic number.

764731725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

764731725 is a deficient number, since it is larger than the sum of its proper divisors (533801235).

764731725 is a wasteful number, since it uses less digits than its factorization.

764731725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275629 (or 275624 counting only the distinct ones).

The product of its digits is 246960, while the sum is 42.

The square root of 764731725 is about 27653.7831950712. The cubic root of 764731725 is about 914.4705049604.

The spelling of 764731725 in words is "seven hundred sixty-four million, seven hundred thirty-one thousand, seven hundred twenty-five".