125339393749 has 2 divisors, whose sum is σ = 125339393750. Its totient is φ = 125339393748.

The previous prime is 125339393737. The next prime is 125339393813. The reversal of 125339393749 is 947393933521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83142839025 + 42196554724 = 288345^2 + 205418^2 .

It is a cyclic number.

It is not a de Polignac number, because 125339393749 - 2⁹ = 125339393237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125339393693 and 125339393702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125339399749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62669696874 + 62669696875.

It is an arithmetic number, because the mean of its divisors is an integer number (62669696875).

Almost surely, 2^125339393749 is an apocalyptic number.

It is an amenable number.

125339393749 is a deficient number, since it is larger than the sum of its proper divisors (1).

125339393749 is an equidigital number, since it uses as much as digits as its factorization.

125339393749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16533720, while the sum is 58.

The spelling of 125339393749 in words is "one hundred twenty-five billion, three hundred thirty-nine million, three hundred ninety-three thousand, seven hundred forty-nine".