125772787 has 4 divisors (see below), whose sum is σ = 143740336. Its totient is φ = 107805240.

The previous prime is 125772769. The next prime is 125772791. The reversal of 125772787 is 787277521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787277521 = 19 ⋅41435659.

It is a cyclic number.

It is not a de Polignac number, because 125772787 - 2¹⁵ = 125740019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125772727) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8983764 + ... + 8983777.

It is an arithmetic number, because the mean of its divisors is an integer number (35935084).

Almost surely, 2^125772787 is an apocalyptic number.

125772787 is a deficient number, since it is larger than the sum of its proper divisors (17967549).

125772787 is an equidigital number, since it uses as much as digits as its factorization.

125772787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17967548.

The product of its digits is 384160, while the sum is 46.

The square root of 125772787 is about 11214.8467220912. The cubic root of 125772787 is about 501.0282665528.

The spelling of 125772787 in words is "one hundred twenty-five million, seven hundred seventy-two thousand, seven hundred eighty-seven".