6225144 has 16 divisors (see below), whose sum is σ = 15562920. Its totient is φ = 2075040.

The previous prime is 6225137. The next prime is 6225181. The reversal of 6225144 is 4415226.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 259381 = 6225144 / (6 + 2 + 2 + 5 + 1 + 4 + 4).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129667 + ... + 129714.

Almost surely, 2^6225144 is an apocalyptic number.

It is an amenable number.

6225144 is an abundant number, since it is smaller than the sum of its proper divisors (9337776).

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

6225144 is a wasteful number, since it uses less digits than its factorization.

6225144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259390 (or 259386 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 6225144 is about 2495.0238475814. The cubic root of 6225144 is about 183.9570630752.

The spelling of 6225144 in words is "six million, two hundred twenty-five thousand, one hundred forty-four".