2605258253525 has 24 divisors (see below), whose sum is σ = 3238150245120. Its totient is φ = 2079285848640.

The previous prime is 2605258253519. The next prime is 2605258253579. The reversal of 2605258253525 is 5253528525062.

It is not a de Polignac number, because 2605258253525 - 2¹⁸ = 2605257991381 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 65598824 + ... + 65638526.

It is an arithmetic number, because the mean of its divisors is an integer number (134922926880).

Almost surely, 2^{2605258253525} is an apocalyptic number.

2605258253525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2605258253525 is a deficient number, since it is larger than the sum of its proper divisors (632891991595).

2605258253525 is a wasteful number, since it uses less digits than its factorization.

2605258253525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45845 (or 45840 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 50.

The spelling of 2605258253525 in words is "two trillion, six hundred five billion, two hundred fifty-eight million, two hundred fifty-three thousand, five hundred twenty-five".