2566402445 has 16 divisors (see below), whose sum is σ = 3216620160. Its totient is φ = 1961999424.

The previous prime is 2566402441. The next prime is 2566402457. The reversal of 2566402445 is 5442046652.

It is a cyclic number.

It is not a de Polignac number, because 2566402445 - 2² = 2566402441 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2566402399 and 2566402408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566402441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118466 + ... + 138444.

It is an arithmetic number, because the mean of its divisors is an integer number (201038760).

Almost surely, 2^2566402445 is an apocalyptic number.

It is an amenable number.

2566402445 is a deficient number, since it is larger than the sum of its proper divisors (650217715).

2566402445 is a wasteful number, since it uses less digits than its factorization.

2566402445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21124.

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 2566402445 is about 50659.6727683865. The cubic root of 2566402445 is about 1369.1202274214.

The spelling of 2566402445 in words is "two billion, five hundred sixty-six million, four hundred two thousand, four hundred forty-five".