125744072491 has 2 divisors, whose sum is σ = 125744072492. Its totient is φ = 125744072490.

The previous prime is 125744072479. The next prime is 125744072497. The reversal of 125744072491 is 194270447521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125744072491 - 2²⁷ = 125609854763 is a prime.

It is not a weakly prime, because it can be changed into another prime (125744072497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62872036245 + 62872036246.

It is an arithmetic number, because the mean of its divisors is an integer number (62872036246).

Almost surely, 2^125744072491 is an apocalyptic number.

125744072491 is a deficient number, since it is larger than the sum of its proper divisors (1).

125744072491 is an equidigital number, since it uses as much as digits as its factorization.

125744072491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 125744072491 in words is "one hundred twenty-five billion, seven hundred forty-four million, seventy-two thousand, four hundred ninety-one".