125581388502 has 8 divisors (see below), whose sum is σ = 251162777016. Its totient is φ = 41860462832.

The previous prime is 125581388479. The next prime is 125581388509. The reversal of 125581388502 is 205883185521.

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

125581388502 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125581388509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10465115703 + ... + 10465115714.

It is an arithmetic number, because the mean of its divisors is an integer number (31395347127).

Almost surely, 2^125581388502 is an apocalyptic number.

125581388502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125581388502 is a wasteful number, since it uses less digits than its factorization.

125581388502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20930231422.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 125581388502 in words is "one hundred twenty-five billion, five hundred eighty-one million, three hundred eighty-eight thousand, five hundred two".