550725985 has 16 divisors (see below), whose sum is σ = 673021440. Its totient is φ = 432544320.

The previous prime is 550725971. The next prime is 550726009. The reversal of 550725985 is 589527055.

It is not a de Polignac number, because 550725985 - 2¹⁹ = 550201697 is a prime.

It is a super-2 number, since 2×550725985² = 606598221108440450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67644 + ... + 75346.

It is an arithmetic number, because the mean of its divisors is an integer number (42063840).

Almost surely, 2^550725985 is an apocalyptic number.

It is an amenable number.

550725985 is a deficient number, since it is larger than the sum of its proper divisors (122295455).

550725985 is a wasteful number, since it uses less digits than its factorization.

550725985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968.

The product of its (nonzero) digits is 630000, while the sum is 46.

The square root of 550725985 is about 23467.5517470400. The cubic root of 550725985 is about 819.6816060135.

The spelling of 550725985 in words is "five hundred fifty million, seven hundred twenty-five thousand, nine hundred eighty-five".