125128828485 has 128 divisors (see below), whose sum is σ = 239995392000. Its totient is φ = 61665981696.

The previous prime is 125128828471. The next prime is 125128828537. The reversal of 125128828485 is 584828821521.

125128828485 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 288 + 284 + 85 = 666.

It is not a de Polignac number, because 125128828485 - 2⁸ = 125128828229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17697531 + ... + 17704599.

It is an arithmetic number, because the mean of its divisors is an integer number (1874964000).

Almost surely, 2^125128828485 is an apocalyptic number.

125128828485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125128828485 is a deficient number, since it is larger than the sum of its proper divisors (114866563515).

125128828485 is a wasteful number, since it uses less digits than its factorization.

125128828485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272 (or 7266 counting only the distinct ones).

The product of its digits is 3276800, while the sum is 54.

The spelling of 125128828485 in words is "one hundred twenty-five billion, one hundred twenty-eight million, eight hundred twenty-eight thousand, four hundred eighty-five".