725223997 has 2 divisors, whose sum is σ = 725223998. Its totient is φ = 725223996.

The previous prime is 725223953. The next prime is 725224043. The reversal of 725223997 is 799322527.

725223997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (725224043) can be obtained adding 725223997 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721405881 + 3818116 = 26859^2 + 1954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725223997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725223907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362611998 + 362611999.

It is an arithmetic number, because the mean of its divisors is an integer number (362611999).

Almost surely, 2^725223997 is an apocalyptic number.

It is an amenable number.

725223997 is a deficient number, since it is larger than the sum of its proper divisors (1).

725223997 is an equidigital number, since it uses as much as digits as its factorization.

725223997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 725223997 is about 26929.9832343060. The cubic root of 725223997 is about 898.4433986216.

It can be divided in two parts, 7252239 and 97, that added together give a triangular number (7252336 = T₃₈₀₈).

The spelling of 725223997 in words is "seven hundred twenty-five million, two hundred twenty-three thousand, nine hundred ninety-seven".