12905055 has 32 divisors (see below), whose sum is σ = 23179200. Its totient is φ = 6811776.

The previous prime is 12905041. The next prime is 12905063. The reversal of 12905055 is 55050921.

It is not a de Polignac number, because 12905055 - 2¹² = 12900959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14277 + ... + 15153.

It is an arithmetic number, because the mean of its divisors is an integer number (724350).

Almost surely, 2^12905055 is an apocalyptic number.

12905055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12905055 is a deficient number, since it is larger than the sum of its proper divisors (10274145).

12905055 is a wasteful number, since it uses less digits than its factorization.

12905055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 12905055 is about 3592.3606444788. The cubic root of 12905055 is about 234.5596401027.

Adding to 12905055 its reverse (55050921), we get a palindrome (67955976).

The spelling of 12905055 in words is "twelve million, nine hundred five thousand, fifty-five".