725369042569 has 2 divisors, whose sum is σ = 725369042570. Its totient is φ = 725369042568.

The previous prime is 725369042507. The next prime is 725369042611. The reversal of 725369042569 is 965240963527.

725369042569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550544708169 + 174824334400 = 741987^2 + 418120^2 .

It is a cyclic number.

It is not a de Polignac number, because 725369042569 - 2¹¹ = 725369040521 is a prime.

It is a super-2 number, since 2×725369042569² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (725369042869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362684521284 + 362684521285.

It is an arithmetic number, because the mean of its divisors is an integer number (362684521285).

Almost surely, 2^725369042569 is an apocalyptic number.

It is an amenable number.

725369042569 is a deficient number, since it is larger than the sum of its proper divisors (1).

725369042569 is an equidigital number, since it uses as much as digits as its factorization.

725369042569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24494400, while the sum is 58.

The spelling of 725369042569 in words is "seven hundred twenty-five billion, three hundred sixty-nine million, forty-two thousand, five hundred sixty-nine".