725270977 has 2 divisors, whose sum is σ = 725270978. Its totient is φ = 725270976.

The previous prime is 725270941. The next prime is 725270989. The reversal of 725270977 is 779072527.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 527896576 + 197374401 = 22976^2 + 14049^2 .

It is an emirp because it is prime and its reverse (779072527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725270977 - 2¹⁹ = 724746689 is a prime.

It is not a weakly prime, because it can be changed into another prime (725271977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362635488 + 362635489.

It is an arithmetic number, because the mean of its divisors is an integer number (362635489).

Almost surely, 2^725270977 is an apocalyptic number.

It is an amenable number.

725270977 is a deficient number, since it is larger than the sum of its proper divisors (1).

725270977 is an equidigital number, since it uses as much as digits as its factorization.

725270977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432180, while the sum is 46.

The square root of 725270977 is about 26930.8554821417. The cubic root of 725270977 is about 898.4627985861.

The spelling of 725270977 in words is "seven hundred twenty-five million, two hundred seventy thousand, nine hundred seventy-seven".