2265561558 has 48 divisors (see below), whose sum is σ = 5564548080. Its totient is φ = 660405312.

The previous prime is 2265561523. The next prime is 2265561583. The reversal of 2265561558 is 8551655622.

2265561558 is a `hidden beast` number, since 2 + 26 + 5 + 5 + 615 + 5 + 8 = 666.

2265561558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250341 + ... + 259232.

It is an arithmetic number, because the mean of its divisors is an integer number (115928085).

Almost surely, 2^2265561558 is an apocalyptic number.

2265561558 is an abundant number, since it is smaller than the sum of its proper divisors (3298986522).

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

2265561558 is a wasteful number, since it uses less digits than its factorization.

2265561558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509613 (or 509610 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 2265561558 is about 47597.9154795670. The cubic root of 2265561558 is about 1313.3847087675.

The spelling of 2265561558 in words is "two billion, two hundred sixty-five million, five hundred sixty-one thousand, five hundred fifty-eight".