125555752500 has 240 divisors, whose sum is σ = 408030638400. Its totient is φ = 29852928000.

The previous prime is 125555752477. The next prime is 125555752523. The reversal of 125555752500 is 5257555521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125555752477) and next prime (125555752523).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2396586 + ... + 2448414.

It is an arithmetic number, because the mean of its divisors is an integer number (1700127660).

Almost surely, 2^125555752500 is an apocalyptic number.

125555752500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125555752500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204015319200).

125555752500 is an abundant number, since it is smaller than the sum of its proper divisors (282474885900).

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

125555752500 is a wasteful number, since it uses less digits than its factorization.

125555752500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51892 (or 51875 counting only the distinct ones).

The product of its (nonzero) digits is 437500, while the sum is 42.

The spelling of 125555752500 in words is "one hundred twenty-five billion, five hundred fifty-five million, seven hundred fifty-two thousand, five hundred".