12545522 has 24 divisors (see below), whose sum is σ = 21143808. Its totient is φ = 5576120.

The previous prime is 12545521. The next prime is 12545527. The reversal of 12545522 is 22554521.

It is a junction number, because it is equal to n+sod(n) for n = 12545491 and 12545500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10823 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (880992).

Almost surely, 2^12545522 is an apocalyptic number.

12545522 is a deficient number, since it is larger than the sum of its proper divisors (8598286).

12545522 is a wasteful number, since it uses less digits than its factorization.

12545522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1163 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 12545522 is about 3541.9658383446. The cubic root of 12545522 is about 232.3608262541.

It can be divided in two parts, 1254 and 5522, that added together give a palindrome (6776).

The spelling of 12545522 in words is "twelve million, five hundred forty-five thousand, five hundred twenty-two".