2265811957265 has 16 divisors (see below), whose sum is σ = 2784196800000. Its totient is φ = 1769511661632.

The previous prime is 2265811957249. The next prime is 2265811957289. The reversal of 2265811957265 is 5627591185622.

It is a cyclic number.

It is not a de Polignac number, because 2265811957265 - 2⁴ = 2265811957249 is a prime.

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, 21430265 + ... + 21535734.

It is an arithmetic number, because the mean of its divisors is an integer number (174012300000).

Almost surely, 2^{2265811957265} is an apocalyptic number.

It is an amenable number.

2265811957265 is a deficient number, since it is larger than the sum of its proper divisors (518384842735).

2265811957265 is a wasteful number, since it uses less digits than its factorization.

2265811957265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42966256.

The product of its digits is 18144000, while the sum is 59.

The spelling of 2265811957265 in words is "two trillion, two hundred sixty-five billion, eight hundred eleven million, nine hundred fifty-seven thousand, two hundred sixty-five".