125136165 has 32 divisors (see below), whose sum is σ = 249624576. Its totient is φ = 52004160.

The previous prime is 125136163. The next prime is 125136191. The reversal of 125136165 is 561631521.

It is not a de Polignac number, because 125136165 - 2¹ = 125136163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125136161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53017 + ... + 55326.

It is an arithmetic number, because the mean of its divisors is an integer number (7800768).

Almost surely, 2^125136165 is an apocalyptic number.

125136165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125136165 is a deficient number, since it is larger than the sum of its proper divisors (124488411).

125136165 is a wasteful number, since it uses less digits than its factorization.

125136165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108369.

The product of its digits is 5400, while the sum is 30.

The square root of 125136165 is about 11186.4277139755. The cubic root of 125136165 is about 500.1814874500.

Adding to 125136165 its reverse (561631521), we get a palindrome (686767686).

The spelling of 125136165 in words is "one hundred twenty-five million, one hundred thirty-six thousand, one hundred sixty-five".