2657665304225 has 48 divisors (see below), whose sum is σ = 3513228264000. Its totient is φ = 1988682451200.

The previous prime is 2657665304167. The next prime is 2657665304227. The reversal of 2657665304225 is 5224035667562.

It is not a de Polignac number, because 2657665304225 - 2¹⁴ = 2657665287841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2657665304227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11839331 + ... + 12061719.

It is an arithmetic number, because the mean of its divisors is an integer number (73192255500).

Almost surely, 2^{2657665304225} is an apocalyptic number.

2657665304225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2657665304225 is a deficient number, since it is larger than the sum of its proper divisors (855562959775).

2657665304225 is a wasteful number, since it uses less digits than its factorization.

2657665304225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222738 (or 222733 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 53.

The spelling of 2657665304225 in words is "two trillion, six hundred fifty-seven billion, six hundred sixty-five million, three hundred four thousand, two hundred twenty-five".