125570369 has 2 divisors, whose sum is σ = 125570370. Its totient is φ = 125570368.

The previous prime is 125570339. The next prime is 125570383. The reversal of 125570369 is 963075521.

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., 124032769 + 1537600 = 11137^2 + 1240^2 .

It is an emirp because it is prime and its reverse (963075521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125570369 is a prime.

It is a super-2 number, since 2×125570369² = 31535835141592322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (125570309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62785184 + 62785185.

It is an arithmetic number, because the mean of its divisors is an integer number (62785185).

Almost surely, 2^125570369 is an apocalyptic number.

It is an amenable number.

125570369 is a deficient number, since it is larger than the sum of its proper divisors (1).

125570369 is an equidigital number, since it uses as much as digits as its factorization.

125570369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 125570369 is about 11205.8185332442. The cubic root of 125570369 is about 500.7593382271.

The spelling of 125570369 in words is "one hundred twenty-five million, five hundred seventy thousand, three hundred sixty-nine".