2265725178 has 12 divisors (see below), whose sum is σ = 4909071258. Its totient is φ = 755241720.

The previous prime is 2265725177. The next prime is 2265725183. The reversal of 2265725178 is 8715275622.

2265725178 is a `hidden beast` number, since 2 + 2 + 6 + 572 + 5 + 1 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2123089929 + 142635249 = 46077^2 + 11943^2 .

It is not an unprimeable number, because it can be changed into a prime (2265725177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62936793 + ... + 62936828.

Almost surely, 2^2265725178 is an apocalyptic number.

2265725178 is an abundant number, since it is smaller than the sum of its proper divisors (2643346080).

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

2265725178 is a wasteful number, since it uses less digits than its factorization.

2265725178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125873629 (or 125873626 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 2265725178 is about 47599.6342212837. The cubic root of 2265725178 is about 1313.4163257754.

The spelling of 2265725178 in words is "two billion, two hundred sixty-five million, seven hundred twenty-five thousand, one hundred seventy-eight".