125002510400000 has 120 divisors (see below), whose sum is σ = 312181117215660. Its totient is φ = 50001003520000.

The previous prime is 125002510399919. The next prime is 125002510400087. The reversal of 125002510400000 is 4015200521.

It can be written as a sum of positive squares in 6 ways, for example, as 41779365980416 + 83223144419584 = 6463696^2 + 9122672^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 37463285 + ... + 40663284.

Almost surely, 2^{125002510400000} is an apocalyptic number.

125002510400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125002510400000 is an abundant number, since it is smaller than the sum of its proper divisors (187178606815660).

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

125002510400000 is an frugal number, since it uses more digits than its factorization.

125002510400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78126612 (or 78126576 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 125002510400000 its reverse (4015200521), we get a palindrome (125006525600521).

The spelling of 125002510400000 in words is "one hundred twenty-five trillion, two billion, five hundred ten million, four hundred thousand".