225161740 has 12 divisors (see below), whose sum is σ = 472839696. Its totient is φ = 90064688.

The previous prime is 225161737. The next prime is 225161747. The reversal of 225161740 is 47161522.

225161740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 225161699 and 225161708.

It is not an unprimeable number, because it can be changed into a prime (225161747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5629024 + ... + 5629063.

It is an arithmetic number, because the mean of its divisors is an integer number (39403308).

Almost surely, 2^225161740 is an apocalyptic number.

225161740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225161740 is an abundant number, since it is smaller than the sum of its proper divisors (247677956).

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

225161740 is a wasteful number, since it uses less digits than its factorization.

225161740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11258096 (or 11258094 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 225161740 is about 15005.3903647989. The cubic root of 225161740 is about 608.3659032206.

The spelling of 225161740 in words is "two hundred twenty-five million, one hundred sixty-one thousand, seven hundred forty".