125523042777 has 48 divisors (see below), whose sum is σ = 206471161728. Its totient is φ = 72739645440.

The previous prime is 125523042767. The next prime is 125523042863. The reversal of 125523042777 is 777240325521.

125523042777 is a `hidden beast` number, since 1 + 2 + 552 + 3 + 0 + 4 + 27 + 77 = 666.

It is not a de Polignac number, because 125523042777 - 2⁴ = 125523042761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125523042767) 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 47 ways as a sum of consecutive naturals, for example, 7134163 + ... + 7151735.

It is an arithmetic number, because the mean of its divisors is an integer number (4301482536).

Almost surely, 2^125523042777 is an apocalyptic number.

It is an amenable number.

125523042777 is a deficient number, since it is larger than the sum of its proper divisors (80948118951).

125523042777 is a wasteful number, since it uses less digits than its factorization.

125523042777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20750 (or 20747 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

It can be divided in two parts, 1255 and 23042777, that added together give a palindrome (23044032).

The spelling of 125523042777 in words is "one hundred twenty-five billion, five hundred twenty-three million, forty-two thousand, seven hundred seventy-seven".