125308769 has 2 divisors, whose sum is σ = 125308770. Its totient is φ = 125308768.

The previous prime is 125308763. The next prime is 125308811. The reversal of 125308769 is 967803521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89548369 + 35760400 = 9463^2 + 5980^2 .

It is an emirp because it is prime and its reverse (967803521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125308769 is a prime.

It is a super-2 number, since 2×125308769² = 31404575176590722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125308763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62654384 + 62654385.

It is an arithmetic number, because the mean of its divisors is an integer number (62654385).

Almost surely, 2^125308769 is an apocalyptic number.

It is an amenable number.

125308769 is a deficient number, since it is larger than the sum of its proper divisors (1).

125308769 is an equidigital number, since it uses as much as digits as its factorization.

125308769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 125308769 is about 11194.1399401651. The cubic root of 125308769 is about 500.4113534838.

The spelling of 125308769 in words is "one hundred twenty-five million, three hundred eight thousand, seven hundred sixty-nine".