16254205505 has 16 divisors (see below), whose sum is σ = 20181862800. Its totient is φ = 12552341760.

The previous prime is 16254205453. The next prime is 16254205511. The reversal of 16254205505 is 50550245261.

It can be written as a sum of positive squares in 8 ways, for example, as 198274561 + 16055930944 = 14081^2 + 126712^2 .

It is not a de Polignac number, because 16254205505 - 2¹² = 16254201409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957431 + ... + 974259.

It is an arithmetic number, because the mean of its divisors is an integer number (1261366425).

Almost surely, 2^16254205505 is an apocalyptic number.

It is an amenable number.

16254205505 is a deficient number, since it is larger than the sum of its proper divisors (3927657295).

16254205505 is a wasteful number, since it uses less digits than its factorization.

16254205505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23524.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 16254205505 in words is "sixteen billion, two hundred fifty-four million, two hundred five thousand, five hundred five".