225144744 has 64 divisors (see below), whose sum is σ = 615384000. Its totient is φ = 68075520.

The previous prime is 225144739. The next prime is 225144749. The reversal of 225144744 is 447441522.

It is an interprime number because it is at equal distance from previous prime (225144739) and next prime (225144749).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (225144749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202462 + ... + 203570.

It is an arithmetic number, because the mean of its divisors is an integer number (9615375).

Almost surely, 2^225144744 is an apocalyptic number.

225144744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

225144744 is an abundant number, since it is smaller than the sum of its proper divisors (390239256).

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

225144744 is a wasteful number, since it uses less digits than its factorization.

225144744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1894 counting only the distinct ones).

The product of its digits is 35840, while the sum is 33.

The square root of 225144744 is about 15004.8240242930. The cubic root of 225144744 is about 608.3505956362.

The spelling of 225144744 in words is "two hundred twenty-five million, one hundred forty-four thousand, seven hundred forty-four".