125265731 has 2 divisors, whose sum is σ = 125265732. Its totient is φ = 125265730.

The previous prime is 125265719. The next prime is 125265733. The reversal of 125265731 is 137562521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125265731 - 2¹⁸ = 125003587 is a prime.

It is a super-2 number, since 2×125265731² = 31383006725928722, which contains 22 as substring.

Together with 125265733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125265733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62632865 + 62632866.

It is an arithmetic number, because the mean of its divisors is an integer number (62632866).

Almost surely, 2^125265731 is an apocalyptic number.

125265731 is a deficient number, since it is larger than the sum of its proper divisors (1).

125265731 is an equidigital number, since it uses as much as digits as its factorization.

125265731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 125265731 is about 11192.2174299823. The cubic root of 125265731 is about 500.3540572278.

The spelling of 125265731 in words is "one hundred twenty-five million, two hundred sixty-five thousand, seven hundred thirty-one".