125722747 has 2 divisors, whose sum is σ = 125722748. Its totient is φ = 125722746.

The previous prime is 125722721. The next prime is 125722759. The reversal of 125722747 is 747227521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125722747 is a prime.

It is a super-2 number, since 2×125722747² = 31612418226452018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125722787) 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, 62861373 + 62861374.

It is an arithmetic number, because the mean of its divisors is an integer number (62861374).

Almost surely, 2^125722747 is an apocalyptic number.

125722747 is a deficient number, since it is larger than the sum of its proper divisors (1).

125722747 is an equidigital number, since it uses as much as digits as its factorization.

125722747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54880, while the sum is 37.

The square root of 125722747 is about 11212.6155289477. The cubic root of 125722747 is about 500.9618113183.

The spelling of 125722747 in words is "one hundred twenty-five million, seven hundred twenty-two thousand, seven hundred forty-seven".