12545555 has 16 divisors (see below), whose sum is σ = 16498944. Its totient is φ = 9082080.

The previous prime is 12545527. The next prime is 12545563. The reversal of 12545555 is 55554521.

It is not a de Polignac number, because 12545555 - 2¹⁴ = 12529171 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, 16514 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^12545555 is an apocalyptic number.

12545555 is a deficient number, since it is larger than the sum of its proper divisors (3953389).

12545555 is a wasteful number, since it uses less digits than its factorization.

12545555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 25000, while the sum is 32.

The square root of 12545555 is about 3541.9704967715. The cubic root of 12545555 is about 232.3610299894.

The spelling of 12545555 in words is "twelve million, five hundred forty-five thousand, five hundred fifty-five".