16254564621225 has 48 divisors (see below), whose sum is σ = 31233952803840. Its totient is φ = 7304714740800.

The previous prime is 16254564621187. The next prime is 16254564621263. The reversal of 16254564621225 is 52212646545261.

It is an interprime number because it is at equal distance from previous prime (16254564621187) and next prime (16254564621263).

It is not a de Polignac number, because 16254564621225 - 2¹² = 16254564617129 is a prime.

It is a Curzon number.

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, 262351021 + ... + 262412970.

It is an arithmetic number, because the mean of its divisors is an integer number (650707350080).

Almost surely, 2^{16254564621225} is an apocalyptic number.

16254564621225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16254564621225 is a deficient number, since it is larger than the sum of its proper divisors (14979388182615).

16254564621225 is a wasteful number, since it uses less digits than its factorization.

16254564621225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524764070 (or 524764065 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 51.

The spelling of 16254564621225 in words is "sixteen trillion, two hundred fifty-four billion, five hundred sixty-four million, six hundred twenty-one thousand, two hundred twenty-five".