225740540 has 24 divisors (see below), whose sum is σ = 485081520. Its totient is φ = 88195968.

The previous prime is 225740533. The next prime is 225740563. The reversal of 225740540 is 45047522.

It is a happy number.

It is a congruent number.

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, 130385 + ... + 132104.

It is an arithmetic number, because the mean of its divisors is an integer number (20211730).

Almost surely, 2^225740540 is an apocalyptic number.

225740540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225740540 is an abundant number, since it is smaller than the sum of its proper divisors (259340980).

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

225740540 is a wasteful number, since it uses less digits than its factorization.

225740540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262541 (or 262539 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 225740540 is about 15024.6643889306. The cubic root of 225740540 is about 608.8867449551.

The spelling of 225740540 in words is "two hundred twenty-five million, seven hundred forty thousand, five hundred forty".