44121440025 has 144 divisors (see below), whose sum is σ = 90382808880. Its totient is φ = 20382105600.

The previous prime is 44121440023. The next prime is 44121440047. The reversal of 44121440025 is 52004412144.

44121440025 is a `hidden beast` number, since 4 + 41 + 214 + 400 + 2 + 5 = 666.

It can be written as a sum of positive squares in 24 ways, for example, as 33682526784 + 10438913241 = 183528^2 + 102171^2 .

It is not a de Polignac number, because 44121440025 - 2¹ = 44121440023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44121440023) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 19341885 + ... + 19344165.

It is an arithmetic number, because the mean of its divisors is an integer number (627658395).

Almost surely, 2^44121440025 is an apocalyptic number.

44121440025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44121440025 is an abundant number, since it is smaller than the sum of its proper divisors (46261368855).

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

44121440025 is a wasteful number, since it uses less digits than its factorization.

44121440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716 (or 2708 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 44121440025 its reverse (52004412144), we get a palindrome (96125852169).

The spelling of 44121440025 in words is "forty-four billion, one hundred twenty-one million, four hundred forty thousand, twenty-five".