40444144225 has 12 divisors (see below), whose sum is σ = 50212602160. Its totient is φ = 32315403600.

The previous prime is 40444144207. The next prime is 40444144231. The reversal of 40444144225 is 52244144404.

It is a happy number.

It is not a de Polignac number, because 40444144225 - 2¹¹ = 40444142177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977115 + ... + 1017664.

Almost surely, 2^40444144225 is an apocalyptic number.

It is an amenable number.

40444144225 is a deficient number, since it is larger than the sum of its proper divisors (9768457935).

40444144225 is a wasteful number, since it uses less digits than its factorization.

40444144225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995600 (or 1995595 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 40444144225 its reverse (52244144404), we get a palindrome (92688288629).

The spelling of 40444144225 in words is "forty billion, four hundred forty-four million, one hundred forty-four thousand, two hundred twenty-five".