725225647 has 2 divisors, whose sum is σ = 725225648. Its totient is φ = 725225646.

The previous prime is 725225629. The next prime is 725225681. The reversal of 725225647 is 746522527.

725225647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725225647 - 2⁷ = 725225519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725225617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362612823 + 362612824.

It is an arithmetic number, because the mean of its divisors is an integer number (362612824).

Almost surely, 2^725225647 is an apocalyptic number.

725225647 is a deficient number, since it is larger than the sum of its proper divisors (1).

725225647 is an equidigital number, since it uses as much as digits as its factorization.

725225647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 40.

The square root of 725225647 is about 26930.0138692872. The cubic root of 725225647 is about 898.4440799883. Note that the first 3 decimals are identical.

The spelling of 725225647 in words is "seven hundred twenty-five million, two hundred twenty-five thousand, six hundred forty-seven".