125240105502 has 80 divisors (see below), whose sum is σ = 285035034240. Its totient is φ = 41092449552.

The previous prime is 125240105477. The next prime is 125240105503. The reversal of 125240105502 is 205501042521.

125240105502 is a `hidden beast` number, since 1 + 2 + 52 + 4 + 0 + 105 + 502 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125240105503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17569063 + ... + 17576189.

It is an arithmetic number, because the mean of its divisors is an integer number (3562937928).

Almost surely, 2^125240105502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125240105502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142517517120).

125240105502 is an abundant number, since it is smaller than the sum of its proper divisors (159794928738).

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

125240105502 is a wasteful number, since it uses less digits than its factorization.

125240105502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8827 (or 8818 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 125240105502 in words is "one hundred twenty-five billion, two hundred forty million, one hundred five thousand, five hundred two".