725122979 has 8 divisors (see below), whose sum is σ = 828875520. Its totient is φ = 621411336.

The previous prime is 725122967. The next prime is 725122997. The reversal of 725122979 is 979221527.

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

It is not a de Polignac number, because 725122979 - 2⁴ = 725122963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725122999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59402 + ... + 70560.

It is an arithmetic number, because the mean of its divisors is an integer number (103609440).

Almost surely, 2^725122979 is an apocalyptic number.

725122979 is a deficient number, since it is larger than the sum of its proper divisors (103752541).

725122979 is a wasteful number, since it uses less digits than its factorization.

725122979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20449.

The product of its digits is 158760, while the sum is 44.

The square root of 725122979 is about 26928.1076015378. The cubic root of 725122979 is about 898.4016813177.

The spelling of 725122979 in words is "seven hundred twenty-five million, one hundred twenty-two thousand, nine hundred seventy-nine".