725755427 has 4 divisors (see below), whose sum is σ = 732538296. Its totient is φ = 718972560.

The previous prime is 725755411. The next prime is 725755439. The reversal of 725755427 is 724557527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724557527 = 17 ⋅42621031.

It is a cyclic number.

It is not a de Polignac number, because 725755427 - 2⁴ = 725755411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725755487) 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, 3391274 + ... + 3391487.

It is an arithmetic number, because the mean of its divisors is an integer number (183134574).

Almost surely, 2^725755427 is an apocalyptic number.

725755427 is a deficient number, since it is larger than the sum of its proper divisors (6782869).

725755427 is a wasteful number, since it uses less digits than its factorization.

725755427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782868.

The product of its digits is 686000, while the sum is 44.

The square root of 725755427 is about 26939.8483106346. The cubic root of 725755427 is about 898.6627989725.

The spelling of 725755427 in words is "seven hundred twenty-five million, seven hundred fifty-five thousand, four hundred twenty-seven".