12515125025140 has 48 divisors (see below), whose sum is σ = 26291003654160. Its totient is φ = 5004290211840.

The previous prime is 12515125025087. The next prime is 12515125025171. The reversal of 12515125025140 is 4152052151521.

It can be written as a sum of positive squares in 8 ways, for example, as 1173573555856 + 11341551469284 = 1083316^2 + 3367722^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12515125025096 and 12515125025105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326733864 + ... + 1326743296.

It is an arithmetic number, because the mean of its divisors is an integer number (547729242795).

Almost surely, 2^{12515125025140} is an apocalyptic number.

12515125025140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515125025140 is an abundant number, since it is smaller than the sum of its proper divisors (13775878629020).

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

12515125025140 is a wasteful number, since it uses less digits than its factorization.

12515125025140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25732 (or 25730 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 34.

Adding to 12515125025140 its reverse (4152052151521), we get a palindrome (16667177176661).

The spelling of 12515125025140 in words is "twelve trillion, five hundred fifteen billion, one hundred twenty-five million, twenty-five thousand, one hundred forty".