125536885578 has 192 divisors, whose sum is σ = 304542830592. Its totient is φ = 37126978560.

The previous prime is 125536885559. The next prime is 125536885613. The reversal of 125536885578 is 875588635521.

It is a happy number.

125536885578 is a `hidden beast` number, since 1 + 2 + 5 + 53 + 6 + 8 + 8 + 5 + 578 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 240032025 + ... + 240032547.

It is an arithmetic number, because the mean of its divisors is an integer number (1586160576).

Almost surely, 2^125536885578 is an apocalyptic number.

125536885578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125536885578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152271415296).

125536885578 is an abundant number, since it is smaller than the sum of its proper divisors (179005945014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125536885578 is a wasteful number, since it uses less digits than its factorization.

125536885578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 906 counting only the distinct ones).

The product of its digits is 80640000, while the sum is 63.

The spelling of 125536885578 in words is "one hundred twenty-five billion, five hundred thirty-six million, eight hundred eighty-five thousand, five hundred seventy-eight".