725245307 has 2 divisors, whose sum is σ = 725245308. Its totient is φ = 725245306.

The previous prime is 725245303. The next prime is 725245309. The reversal of 725245307 is 703542527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725245307 - 2² = 725245303 is a prime.

Together with 725245309, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_37491461 and since 725245307 and 37491461 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (725245303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362622653 + 362622654.

It is an arithmetic number, because the mean of its divisors is an integer number (362622654).

Almost surely, 2^725245307 is an apocalyptic number.

725245307 is a deficient number, since it is larger than the sum of its proper divisors (1).

725245307 is an equidigital number, since it uses as much as digits as its factorization.

725245307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 725245307 is about 26930.3788870487. The cubic root of 725245307 is about 898.4521984965.

The spelling of 725245307 in words is "seven hundred twenty-five million, two hundred forty-five thousand, three hundred seven".