725222999 has 2 divisors, whose sum is σ = 725223000. Its totient is φ = 725222998.

The previous prime is 725222987. The next prime is 725223001. The reversal of 725222999 is 999222527.

725222999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725222999 - 2²⁴ = 708445783 is a prime.

Together with 725223001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725222929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362611499 + 362611500.

It is an arithmetic number, because the mean of its divisors is an integer number (362611500).

Almost surely, 2^725222999 is an apocalyptic number.

725222999 is a deficient number, since it is larger than the sum of its proper divisors (1).

725222999 is an equidigital number, since it uses as much as digits as its factorization.

725222999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The square root of 725222999 is about 26929.9647047671. The cubic root of 725222999 is about 898.4429864975.

The spelling of 725222999 in words is "seven hundred twenty-five million, two hundred twenty-two thousand, nine hundred ninety-nine".