40225444 has 12 divisors (see below), whose sum is σ = 80450944. Its totient is φ = 17239464.

The previous prime is 40225429. The next prime is 40225487. The reversal of 40225444 is 44452204.

It is a happy number.

40225444 is an admirable 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, 718284 + ... + 718339.

Almost surely, 2^40225444 is an apocalyptic number.

It is an amenable number.

40225444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40225444 is a wasteful number, since it uses less digits than its factorization.

40225444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436634 (or 1436632 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 40225444 is about 6342.3531910483. The cubic root of 40225444 is about 342.6364923863.

Adding to 40225444 its reverse (44452204), we get a palindrome (84677648).

The spelling of 40225444 in words is "forty million, two hundred twenty-five thousand, four hundred forty-four".