125787151 has 4 divisors (see below), whose sum is σ = 143756752. Its totient is φ = 107817552.

The previous prime is 125787143. The next prime is 125787157. The reversal of 125787151 is 151787521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151787521 = 3011 ⋅50411.

It is a cyclic number.

It is not a de Polignac number, because 125787151 - 2³ = 125787143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125787151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125787157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984790 + ... + 8984803.

It is an arithmetic number, because the mean of its divisors is an integer number (35939188).

Almost surely, 2^125787151 is an apocalyptic number.

125787151 is a deficient number, since it is larger than the sum of its proper divisors (17969601).

125787151 is an equidigital number, since it uses as much as digits as its factorization.

125787151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17969600.

The product of its digits is 19600, while the sum is 37.

The square root of 125787151 is about 11215.4871048921. The cubic root of 125787151 is about 501.0473392957.

The spelling of 125787151 in words is "one hundred twenty-five million, seven hundred eighty-seven thousand, one hundred fifty-one".