125775715 has 24 divisors (see below), whose sum is σ = 165754080. Its totient is φ = 91563264.

The previous prime is 125775701. The next prime is 125775721. The reversal of 125775715 is 517577521.

It is not a de Polignac number, because 125775715 - 2⁹ = 125775203 is a prime.

It is a super-2 number, since 2×125775715² = 31639060967522450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60666 + ... + 62704.

It is an arithmetic number, because the mean of its divisors is an integer number (6906420).

Almost surely, 2^125775715 is an apocalyptic number.

125775715 is a deficient number, since it is larger than the sum of its proper divisors (39978365).

125775715 is a wasteful number, since it uses less digits than its factorization.

125775715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 2130 counting only the distinct ones).

The product of its digits is 85750, while the sum is 40.

The square root of 125775715 is about 11214.9772625717. The cubic root of 125775715 is about 501.0321545147.

The spelling of 125775715 in words is "one hundred twenty-five million, seven hundred seventy-five thousand, seven hundred fifteen".