725123194057 has 2 divisors, whose sum is σ = 725123194058. Its totient is φ = 725123194056.

The previous prime is 725123194051. The next prime is 725123194079. The reversal of 725123194057 is 750491321527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542021360841 + 183101833216 = 736221^2 + 427904^2 .

It is a cyclic number.

It is not a de Polignac number, because 725123194057 - 2¹⁹ = 725122669769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725123193998 and 725123194016.

It is not a weakly prime, because it can be changed into another prime (725123194051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362561597028 + 362561597029.

It is an arithmetic number, because the mean of its divisors is an integer number (362561597029).

Almost surely, 2^725123194057 is an apocalyptic number.

It is an amenable number.

725123194057 is a deficient number, since it is larger than the sum of its proper divisors (1).

725123194057 is an equidigital number, since it uses as much as digits as its factorization.

725123194057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 725123194057 in words is "seven hundred twenty-five billion, one hundred twenty-three million, one hundred ninety-four thousand, fifty-seven".