225802540 has 48 divisors (see below), whose sum is σ = 482993280. Its totient is φ = 88657920.

The previous prime is 225802519. The next prime is 225802559. The reversal of 225802540 is 45208522.

It is a junction number, because it is equal to n+sod(n) for n = 225802499 and 225802508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380484 + ... + 381076.

It is an arithmetic number, because the mean of its divisors is an integer number (10062360).

Almost surely, 2^225802540 is an apocalyptic number.

225802540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225802540 is an abundant number, since it is smaller than the sum of its proper divisors (257190740).

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

225802540 is a wasteful number, since it uses less digits than its factorization.

225802540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 225802540 is about 15026.7275213201. The cubic root of 225802540 is about 608.9424837583.

The spelling of 225802540 in words is "two hundred twenty-five million, eight hundred two thousand, five hundred forty".