125642115 has 24 divisors (see below), whose sum is σ = 219052080. Its totient is φ = 66617664.

The previous prime is 125642113. The next prime is 125642119. The reversal of 125642115 is 511246521.

125642115 is a `hidden beast` number, since 1 + 2 + 5 + 642 + 1 + 15 = 666.

It is not a de Polignac number, because 125642115 - 2¹ = 125642113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125642113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285 + ... + 15854.

It is an arithmetic number, because the mean of its divisors is an integer number (9127170).

Almost surely, 2^125642115 is an apocalyptic number.

125642115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125642115 is a deficient number, since it is larger than the sum of its proper divisors (93409965).

125642115 is a wasteful number, since it uses less digits than its factorization.

125642115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16323 (or 16320 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 125642115 is about 11209.0193594266. The cubic root of 125642115 is about 500.8546915057.

Adding to 125642115 its reverse (511246521), we get a palindrome (636888636).

The spelling of 125642115 in words is "one hundred twenty-five million, six hundred forty-two thousand, one hundred fifteen".