125145654777 has 48 divisors (see below), whose sum is σ = 219010593600. Its totient is φ = 70011527040.

The previous prime is 125145654773. The next prime is 125145654779. The reversal of 125145654777 is 777456541521.

125145654777 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 4 + 565 + 4 + 7 + 77 = 666.

It is not a de Polignac number, because 125145654777 - 2² = 125145654773 is a prime.

It is a super-2 number, since 2×125145654777² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125145654773) 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, 1196452 + ... + 1296837.

It is an arithmetic number, because the mean of its divisors is an integer number (4562720700).

Almost surely, 2^125145654777 is an apocalyptic number.

It is an amenable number.

125145654777 is a deficient number, since it is larger than the sum of its proper divisors (93864938823).

125145654777 is a wasteful number, since it uses less digits than its factorization.

125145654777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493335 (or 2493316 counting only the distinct ones).

The product of its digits is 8232000, while the sum is 54.

The spelling of 125145654777 in words is "one hundred twenty-five billion, one hundred forty-five million, six hundred fifty-four thousand, seven hundred seventy-seven".