16240321653225 has 48 divisors (see below), whose sum is σ = 28723210221888. Its totient is φ = 8067963248640.

The previous prime is 16240321653217. The next prime is 16240321653233. The reversal of 16240321653225 is 52235612304261.

It is an interprime number because it is at equal distance from previous prime (16240321653217) and next prime (16240321653233).

It is not a de Polignac number, because 16240321653225 - 2³ = 16240321653217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65533579 + ... + 65780928.

It is an arithmetic number, because the mean of its divisors is an integer number (598400212956).

Almost surely, 2^{16240321653225} is an apocalyptic number.

16240321653225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16240321653225 is a deficient number, since it is larger than the sum of its proper divisors (12482888568663).

16240321653225 is a wasteful number, since it uses less digits than its factorization.

16240321653225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131314634 (or 131314629 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 16240321653225 its reverse (52235612304261), we get a palindrome (68475933957486).

The spelling of 16240321653225 in words is "sixteen trillion, two hundred forty billion, three hundred twenty-one million, six hundred fifty-three thousand, two hundred twenty-five".