725427539 has 2 divisors, whose sum is σ = 725427540. Its totient is φ = 725427538.

The previous prime is 725427529. The next prime is 725427541. The reversal of 725427539 is 935724527.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725427539 is a prime.

It is a super-2 number, since 2×725427539² = 1052490228679193042, which contains 22 as substring.

Together with 725427541, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725427539.

It is not a weakly prime, because it can be changed into another prime (725427529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362713769 + 362713770.

It is an arithmetic number, because the mean of its divisors is an integer number (362713770).

Almost surely, 2^725427539 is an apocalyptic number.

725427539 is a deficient number, since it is larger than the sum of its proper divisors (1).

725427539 is an equidigital number, since it uses as much as digits as its factorization.

725427539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 44.

The square root of 725427539 is about 26933.7620654821. The cubic root of 725427539 is about 898.5274433955.

The spelling of 725427539 in words is "seven hundred twenty-five million, four hundred twenty-seven thousand, five hundred thirty-nine".