125705680 has 40 divisors (see below), whose sum is σ = 293008032. Its totient is φ = 50154624.

The previous prime is 125705677. The next prime is 125705681. The reversal of 125705680 is 86507521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125705681) 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, 33667 + ... + 37213.

Almost surely, 2^125705680 is an apocalyptic number.

125705680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125705680 is an abundant number, since it is smaller than the sum of its proper divisors (167302352).

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

125705680 is a wasteful number, since it uses less digits than its factorization.

125705680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3997 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 125705680 is about 11211.8544407248. The cubic root of 125705680 is about 500.9391415884.

The spelling of 125705680 in words is "one hundred twenty-five million, seven hundred five thousand, six hundred eighty".