2565264405 has 32 divisors (see below), whose sum is σ = 4672235520. Its totient is φ = 1189686080.

The previous prime is 2565264367. The next prime is 2565264409. The reversal of 2565264405 is 5044625652.

It is not a de Polignac number, because 2565264405 - 2⁶ = 2565264341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565264409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334185 + ... + 341774.

It is an arithmetic number, because the mean of its divisors is an integer number (146007360).

Almost surely, 2^2565264405 is an apocalyptic number.

It is an amenable number.

2565264405 is a deficient number, since it is larger than the sum of its proper divisors (2106971115).

2565264405 is a wasteful number, since it uses less digits than its factorization.

2565264405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676001.

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 2565264405 is about 50648.4393145534. The cubic root of 2565264405 is about 1368.9178242543.

The spelling of 2565264405 in words is "two billion, five hundred sixty-five million, two hundred sixty-four thousand, four hundred five".