12640025012515 has 8 divisors (see below), whose sum is σ = 15168227901840. Its totient is φ = 10111888085472.

The previous prime is 12640025012501. The next prime is 12640025012533. The reversal of 12640025012515 is 51521052004621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12640025012515 - 2³¹ = 12637877528867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16068009 + ... + 16836298.

It is an arithmetic number, because the mean of its divisors is an integer number (1896028487730).

Almost surely, 2^{12640025012515} is an apocalyptic number.

12640025012515 is a deficient number, since it is larger than the sum of its proper divisors (2528202889325).

12640025012515 is an equidigital number, since it uses as much as digits as its factorization.

12640025012515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32981141.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 12640025012515 in words is "twelve trillion, six hundred forty billion, twenty-five million, twelve thousand, five hundred fifteen".