23440001621425 has 24 divisors (see below), whose sum is σ = 29565354124800. Its totient is φ = 18429733586880.

The previous prime is 23440001621419. The next prime is 23440001621431. The reversal of 23440001621425 is 52412610004432.

It is an interprime number because it is at equal distance from previous prime (23440001621419) and next prime (23440001621431).

It is not a de Polignac number, because 23440001621425 - 2¹⁵ = 23440001588657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4224027 + ... + 8045023.

It is an arithmetic number, because the mean of its divisors is an integer number (1231889755200).

Almost surely, 2^{23440001621425} is an apocalyptic number.

23440001621425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23440001621425 is a deficient number, since it is larger than the sum of its proper divisors (6125352503375).

23440001621425 is a wasteful number, since it uses less digits than its factorization.

23440001621425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825225 (or 3825220 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 23440001621425 its reverse (52412610004432), we get a palindrome (75852611625857).

The spelling of 23440001621425 in words is "twenty-three trillion, four hundred forty billion, one million, six hundred twenty-one thousand, four hundred twenty-five".