125135927 has 4 divisors (see below), whose sum is σ = 143012496. Its totient is φ = 107259360.

The previous prime is 125135911. The next prime is 125135947. The reversal of 125135927 is 729531521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 729531521 = 3023 ⋅241327.

It is a cyclic number.

It is not a de Polignac number, because 125135927 - 2⁴ = 125135911 is a prime.

It is a super-2 number, since 2×125135927² = 31318000452298658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125135947) 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 in 3 ways as a sum of consecutive naturals, for example, 8938274 + ... + 8938287.

It is an arithmetic number, because the mean of its divisors is an integer number (35753124).

Almost surely, 2^125135927 is an apocalyptic number.

125135927 is a deficient number, since it is larger than the sum of its proper divisors (17876569).

125135927 is an equidigital number, since it uses as much as digits as its factorization.

125135927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17876568.

The product of its digits is 18900, while the sum is 35.

The square root of 125135927 is about 11186.4170760794. The cubic root of 125135927 is about 500.1811703467.

The spelling of 125135927 in words is "one hundred twenty-five million, one hundred thirty-five thousand, nine hundred twenty-seven".