125126262769 has 2 divisors, whose sum is σ = 125126262770. Its totient is φ = 125126262768.

The previous prime is 125126262733. The next prime is 125126262803. The reversal of 125126262769 is 967262621521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69215295744 + 55910967025 = 263088^2 + 236455^2 .

It is a cyclic number.

It is not a de Polignac number, because 125126262769 - 2¹⁹ = 125125738481 is a prime.

It is a super-2 number, since 2×125126262769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125126232769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62563131384 + 62563131385.

It is an arithmetic number, because the mean of its divisors is an integer number (62563131385).

Almost surely, 2^125126262769 is an apocalyptic number.

It is an amenable number.

125126262769 is a deficient number, since it is larger than the sum of its proper divisors (1).

125126262769 is an equidigital number, since it uses as much as digits as its factorization.

125126262769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The spelling of 125126262769 in words is "one hundred twenty-five billion, one hundred twenty-six million, two hundred sixty-two thousand, seven hundred sixty-nine".