125944506269 has 2 divisors, whose sum is σ = 125944506270. Its totient is φ = 125944506268.

The previous prime is 125944506241. The next prime is 125944506361. The reversal of 125944506269 is 962605449521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116118740644 + 9825765625 = 340762^2 + 99125^2 .

It is a cyclic number.

It is not a de Polignac number, because 125944506269 - 2³² = 121649538973 is a prime.

It is a super-2 number, since 2×125944506269² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125944506269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125944506169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62972253134 + 62972253135.

It is an arithmetic number, because the mean of its divisors is an integer number (62972253135).

Almost surely, 2^125944506269 is an apocalyptic number.

It is an amenable number.

125944506269 is a deficient number, since it is larger than the sum of its proper divisors (1).

125944506269 is an equidigital number, since it uses as much as digits as its factorization.

125944506269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 125944506269 in words is "one hundred twenty-five billion, nine hundred forty-four million, five hundred six thousand, two hundred sixty-nine".