125781255580 has 48 divisors (see below), whose sum is σ = 267968675520. Its totient is φ = 49583923200.

The previous prime is 125781255563. The next prime is 125781255583. The reversal of 125781255580 is 85552187521.

It is a super-3 number, since 3×125781255580³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125781255583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801910 + ... + 3834850.

It is an arithmetic number, because the mean of its divisors is an integer number (5582680740).

Almost surely, 2^125781255580 is an apocalyptic number.

125781255580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125781255580 is an abundant number, since it is smaller than the sum of its proper divisors (142187419940).

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

125781255580 is a wasteful number, since it uses less digits than its factorization.

125781255580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35710 (or 35708 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 49.

The spelling of 125781255580 in words is "one hundred twenty-five billion, seven hundred eighty-one million, two hundred fifty-five thousand, five hundred eighty".