16550247625 has 8 divisors (see below), whose sum is σ = 20654709192. Its totient is φ = 13240198000.

The previous prime is 16550247551. The next prime is 16550247629. The reversal of 16550247625 is 52674205561.

It can be written as a sum of positive squares in 4 ways, for example, as 2247044409 + 14303203216 = 47403^2 + 119596^2 .

It is not a de Polignac number, because 16550247625 - 2¹⁷ = 16550116553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16550247629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66200866 + ... + 66201115.

It is an arithmetic number, because the mean of its divisors is an integer number (2581838649).

Almost surely, 2^16550247625 is an apocalyptic number.

It is an amenable number.

16550247625 is a deficient number, since it is larger than the sum of its proper divisors (4104461567).

16550247625 is an equidigital number, since it uses as much as digits as its factorization.

16550247625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132401996 (or 132401986 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 16550247625 in words is "sixteen billion, five hundred fifty million, two hundred forty-seven thousand, six hundred twenty-five".