125320565680 has 160 divisors (see below), whose sum is σ = 304002471168. Its totient is φ = 48010368000.

The previous prime is 125320565653. The next prime is 125320565687. The reversal of 125320565680 is 86565023521.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (125320565687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37174395 + ... + 37177765.

Almost surely, 2^125320565680 is an apocalyptic number.

125320565680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125320565680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152001235584).

125320565680 is an abundant number, since it is smaller than the sum of its proper divisors (178681905488).

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

125320565680 is a wasteful number, since it uses less digits than its factorization.

125320565680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 125320565680 in words is "one hundred twenty-five billion, three hundred twenty million, five hundred sixty-five thousand, six hundred eighty".