125002400000 has 108 divisors (see below), whose sum is σ = 311877671364. Its totient is φ = 50000640000.

The previous prime is 125002399987. The next prime is 125002400027. The reversal of 125002400000 is 4200521.

It can be written as a sum of positive squares in 6 ways, for example, as 124727636224 + 274763776 = 353168^2 + 16576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 721874 + ... + 878126.

Almost surely, 2^125002400000 is an apocalyptic number.

125002400000 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 125002400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155938835682).

125002400000 is an abundant number, since it is smaller than the sum of its proper divisors (186875271364).

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

125002400000 is an frugal number, since it uses more digits than its factorization.

125002400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156294 (or 156260 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 125002400000 its reverse (4200521), we get a palindrome (125006600521).

The spelling of 125002400000 in words is "one hundred twenty-five billion, two million, four hundred thousand".