125117115651 has 24 divisors (see below), whose sum is σ = 197165457216. Its totient is φ = 75824241840.

The previous prime is 125117115611. The next prime is 125117115691. The reversal of 125117115651 is 156511711521.

125117115651 is a `hidden beast` number, since 1 + 2 + 511 + 71 + 15 + 65 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (125117115611) and next prime (125117115691).

It is not a de Polignac number, because 125117115651 - 2¹⁷ = 125116984579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125117115611) 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, 3013036 + ... + 3054278.

It is an arithmetic number, because the mean of its divisors is an integer number (8215227384).

Almost surely, 2^125117115651 is an apocalyptic number.

125117115651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125117115651 is a deficient number, since it is larger than the sum of its proper divisors (72048341565).

125117115651 is a wasteful number, since it uses less digits than its factorization.

125117115651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71903 (or 71900 counting only the distinct ones).

The product of its digits is 10500, while the sum is 36.

The spelling of 125117115651 in words is "one hundred twenty-five billion, one hundred seventeen million, one hundred fifteen thousand, six hundred fifty-one".