2565562240 has 64 divisors (see below), whose sum is σ = 6299120160. Its totient is φ = 998479872.

The previous prime is 2565562231. The next prime is 2565562243. The reversal of 2565562240 is 422655652.

2565562240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 2565562240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565562243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30492 + ... + 77851.

Almost surely, 2^2565562240 is an apocalyptic number.

2565562240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565562240 is an abundant number, since it is smaller than the sum of its proper divisors (3733557920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565562240 is a wasteful number, since it uses less digits than its factorization.

2565562240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108399 (or 108387 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2565562240 is about 50651.3794481453. The cubic root of 2565562240 is about 1368.9708007118.

The spelling of 2565562240 in words is "two billion, five hundred sixty-five million, five hundred sixty-two thousand, two hundred forty".