40225664 has 16 divisors (see below), whose sum is σ = 80137320. Its totient is φ = 20112768.

The previous prime is 40225649. The next prime is 40225667. The reversal of 40225664 is 46652204.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40225667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157004 + ... + 157259.

Almost surely, 2^40225664 is an apocalyptic number.

It is an amenable number.

40225664 is a deficient number, since it is larger than the sum of its proper divisors (39911656).

40225664 is an equidigital number, since it uses as much as digits as its factorization.

40225664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314277 (or 314265 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 40225664 is about 6342.3705347449. The cubic root of 40225664 is about 342.6371170315.

Adding to 40225664 its reverse (46652204), we get a palindrome (86877868).

The spelling of 40225664 in words is "forty million, two hundred twenty-five thousand, six hundred sixty-four".