225187648 has 28 divisors (see below), whose sum is σ = 510694432. Its totient is φ = 96508800.

The previous prime is 225187631. The next prime is 225187649. The reversal of 225187648 is 846781522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225187649) 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, 250878 + ... + 251773.

Almost surely, 2^225187648 is an apocalyptic number.

225187648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

225187648 is an abundant number, since it is smaller than the sum of its proper divisors (285506784).

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

225187648 is an equidigital number, since it uses as much as digits as its factorization.

225187648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502670 (or 502660 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 225187648 is about 15006.2536297372. The cubic root of 225187648 is about 608.3892359878.

The spelling of 225187648 in words is "two hundred twenty-five million, one hundred eighty-seven thousand, six hundred forty-eight".