725970757 has 2 divisors, whose sum is σ = 725970758. Its totient is φ = 725970756.

The previous prime is 725970731. The next prime is 725970779. The reversal of 725970757 is 757079527.

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., 625450081 + 100520676 = 25009^2 + 10026^2 .

It is an emirp because it is prime and its reverse (757079527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725970757 - 2²³ = 717582149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725970757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725970727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362985378 + 362985379.

It is an arithmetic number, because the mean of its divisors is an integer number (362985379).

Almost surely, 2^725970757 is an apocalyptic number.

It is an amenable number.

725970757 is a deficient number, since it is larger than the sum of its proper divisors (1).

725970757 is an equidigital number, since it uses as much as digits as its factorization.

725970757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080450, while the sum is 49.

The square root of 725970757 is about 26943.8445103886. The cubic root of 725970757 is about 898.7516672600.

The spelling of 725970757 in words is "seven hundred twenty-five million, nine hundred seventy thousand, seven hundred fifty-seven".