125685851280 has 80 divisors (see below), whose sum is σ = 425046705984. Its totient is φ = 30469296640.

The previous prime is 125685851279. The next prime is 125685851339. The reversal of 125685851280 is 82158586521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23801499 + ... + 23806778.

Almost surely, 2^125685851280 is an apocalyptic number.

125685851280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125685851280 is an abundant number, since it is smaller than the sum of its proper divisors (299360854704).

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

125685851280 is a wasteful number, since it uses less digits than its factorization.

125685851280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47608304 (or 47608298 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 51.

The spelling of 125685851280 in words is "one hundred twenty-five billion, six hundred eighty-five million, eight hundred fifty-one thousand, two hundred eighty".