725666723 has 2 divisors, whose sum is σ = 725666724. Its totient is φ = 725666722.

The previous prime is 725666701. The next prime is 725666741. The reversal of 725666723 is 327666527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725666723 - 2⁶ = 725666659 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (725686723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362833361 + 362833362.

It is an arithmetic number, because the mean of its divisors is an integer number (362833362).

Almost surely, 2^725666723 is an apocalyptic number.

725666723 is a deficient number, since it is larger than the sum of its proper divisors (1).

725666723 is an equidigital number, since it uses as much as digits as its factorization.

725666723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 44.

The square root of 725666723 is about 26938.2019258896. The cubic root of 725666723 is about 898.6261850620.

The spelling of 725666723 in words is "seven hundred twenty-five million, six hundred sixty-six thousand, seven hundred twenty-three".