16554423266025 has 12 divisors (see below), whose sum is σ = 27369979799952. Its totient is φ = 8829025741840.

The previous prime is 16554423265993. The next prime is 16554423266027. The reversal of 16554423266025 is 52066232445561.

It is not a de Polignac number, because 16554423266025 - 2⁵ = 16554423265993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16554423266027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110362821699 + ... + 110362821848.

It is an arithmetic number, because the mean of its divisors is an integer number (2280831649996).

Almost surely, 2^{16554423266025} is an apocalyptic number.

16554423266025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16554423266025 is a deficient number, since it is larger than the sum of its proper divisors (10815556533927).

16554423266025 is a wasteful number, since it uses less digits than its factorization.

16554423266025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220725643560 (or 220725643555 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 51.

The spelling of 16554423266025 in words is "sixteen trillion, five hundred fifty-four billion, four hundred twenty-three million, two hundred sixty-six thousand, twenty-five".