125536885577 has 8 divisors (see below), whose sum is σ = 132967153800. Its totient is φ = 118111700224.

The previous prime is 125536885559. The next prime is 125536885613. The reversal of 125536885577 is 775588635521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59156454841 + 66380430736 = 243221^2 + 257644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125536885577 - 2¹⁴ = 125536869193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125536881577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219802 + ... + 1318707.

It is an arithmetic number, because the mean of its divisors is an integer number (16620894225).

Almost surely, 2^125536885577 is an apocalyptic number.

125536885577 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125536885577 is a deficient number, since it is larger than the sum of its proper divisors (7430268223).

125536885577 is a wasteful number, since it uses less digits than its factorization.

125536885577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541435.

The product of its digits is 70560000, while the sum is 62.

The spelling of 125536885577 in words is "one hundred twenty-five billion, five hundred thirty-six million, eight hundred eighty-five thousand, five hundred seventy-seven".