723125881 has 3 divisors (see below), whose sum is σ = 723152773. Its totient is φ = 723098990.

The previous prime is 723125869. The next prime is 723125899. The reversal of 723125881 is 188521327.

The square root of 723125881 is 26891.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188521327 = 37 ⋅5095171.

It is not a de Polignac number, because 723125881 - 2⁵ = 723125849 is a prime.

It is a super-2 number, since 2×723125881² = 1045822079544052322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 723125881.

It is not an unprimeable number, because it can be changed into a prime (723125981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13446 + ... + 40336.

Almost surely, 2^723125881 is an apocalyptic number.

723125881 is the 26891-st square number.

723125881 is the 13446-th centered octagonal number.

It is an amenable number.

723125881 is a deficient number, since it is larger than the sum of its proper divisors (26892).

723125881 is an frugal number, since it uses more digits than its factorization.

723125881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53782 (or 26891 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The cubic root of 723125881 is about 897.5761450799.

The spelling of 723125881 in words is "seven hundred twenty-three million, one hundred twenty-five thousand, eight hundred eighty-one".