2265855780 has 24 divisors (see below), whose sum is σ = 6344396352. Its totient is φ = 604228192.

The previous prime is 2265855749. The next prime is 2265855817. The reversal of 2265855780 is 875585622.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18882072 + ... + 18882191.

It is an arithmetic number, because the mean of its divisors is an integer number (264349848).

Almost surely, 2^2265855780 is an apocalyptic number.

2265855780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2265855780 is an abundant number, since it is smaller than the sum of its proper divisors (4078540572).

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

2265855780 is a wasteful number, since it uses less digits than its factorization.

2265855780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37764275 (or 37764273 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The square root of 2265855780 is about 47601.0060818046. The cubic root of 2265855780 is about 1313.4415614784.

The spelling of 2265855780 in words is "two billion, two hundred sixty-five million, eight hundred fifty-five thousand, seven hundred eighty".