725425231 has 2 divisors, whose sum is σ = 725425232. Its totient is φ = 725425230.

The previous prime is 725425201. The next prime is 725425271. The reversal of 725425231 is 132524527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725425231 - 2⁵ = 725425199 is a prime.

It is a super-2 number, since 2×725425231² = 1052483531542806722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725425193 and 725425202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725425201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362712615 + 362712616.

It is an arithmetic number, because the mean of its divisors is an integer number (362712616).

Almost surely, 2^725425231 is an apocalyptic number.

725425231 is a deficient number, since it is larger than the sum of its proper divisors (1).

725425231 is an equidigital number, since it uses as much as digits as its factorization.

725425231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 725425231 is about 26933.7192195954. The cubic root of 725425231 is about 898.5264904846.

Adding to 725425231 its reverse (132524527), we get a palindrome (857949758).

The spelling of 725425231 in words is "seven hundred twenty-five million, four hundred twenty-five thousand, two hundred thirty-one".