125616135 has 8 divisors (see below), whose sum is σ = 200985840. Its totient is φ = 66995264.

The previous prime is 125616131. The next prime is 125616143. The reversal of 125616135 is 531616521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125616135 - 2² = 125616131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125616131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4187190 + ... + 4187219.

It is an arithmetic number, because the mean of its divisors is an integer number (25123230).

Almost surely, 2^125616135 is an apocalyptic number.

125616135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125616135 is a deficient number, since it is larger than the sum of its proper divisors (75369705).

125616135 is an equidigital number, since it uses as much as digits as its factorization.

125616135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374417.

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

The square root of 125616135 is about 11207.8604113363. The cubic root of 125616135 is about 500.8201672491.

It can be divided in two parts, 125616 and 135, that added together give a triangular number (125751 = T₅₀₁).

The spelling of 125616135 in words is "one hundred twenty-five million, six hundred sixteen thousand, one hundred thirty-five".