2615145135225 has 96 divisors (see below), whose sum is σ = 5024326708224. Its totient is φ = 1175442105600.

The previous prime is 2615145135193. The next prime is 2615145135233. The reversal of 2615145135225 is 5225315415162.

It is a happy number.

It is not a de Polignac number, because 2615145135225 - 2⁵ = 2615145135193 is a prime.

It is a super-4 number, since 4×2615145135225⁴ (a number of 51 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 91032714 + ... + 91061436.

It is an arithmetic number, because the mean of its divisors is an integer number (52336736544).

Almost surely, 2^{2615145135225} is an apocalyptic number.

2615145135225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2615145135225 is a deficient number, since it is larger than the sum of its proper divisors (2409181572999).

2615145135225 is a wasteful number, since it uses less digits than its factorization.

2615145135225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31647 (or 31642 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

The spelling of 2615145135225 in words is "two trillion, six hundred fifteen billion, one hundred forty-five million, one hundred thirty-five thousand, two hundred twenty-five".