125239775 has 6 divisors (see below), whose sum is σ = 155297352. Its totient is φ = 100191800.

The previous prime is 125239769. The next prime is 125239787. The reversal of 125239775 is 577932521.

It is not a de Polignac number, because 125239775 - 2¹² = 125235679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 2504771 + ... + 2504820.

It is an arithmetic number, because the mean of its divisors is an integer number (25882892).

Almost surely, 2^125239775 is an apocalyptic number.

125239775 is a deficient number, since it is larger than the sum of its proper divisors (30057577).

125239775 is an equidigital number, since it uses as much as digits as its factorization.

125239775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009601 (or 5009596 counting only the distinct ones).

The product of its digits is 132300, while the sum is 41.

The square root of 125239775 is about 11191.0578141657. The cubic root of 125239775 is about 500.3194958014.

The spelling of 125239775 in words is "one hundred twenty-five million, two hundred thirty-nine thousand, seven hundred seventy-five".