125473769 has 2 divisors, whose sum is σ = 125473770. Its totient is φ = 125473768.

The previous prime is 125473759. The next prime is 125473783. The reversal of 125473769 is 967374521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83028544 + 42445225 = 9112^2 + 6515^2 .

It is an emirp because it is prime and its reverse (967374521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125473769 is a prime.

It is a super-2 number, since 2×125473769² = 31487333414130722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125473729) 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, 62736884 + 62736885.

It is an arithmetic number, because the mean of its divisors is an integer number (62736885).

Almost surely, 2^125473769 is an apocalyptic number.

It is an amenable number.

125473769 is a deficient number, since it is larger than the sum of its proper divisors (1).

125473769 is an equidigital number, since it uses as much as digits as its factorization.

125473769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 125473769 is about 11201.5074431971. The cubic root of 125473769 is about 500.6308956066.

The spelling of 125473769 in words is "one hundred twenty-five million, four hundred seventy-three thousand, seven hundred sixty-nine".