12125554 has 16 divisors (see below), whose sum is σ = 21691008. Its totient is φ = 4970592.

The previous prime is 12125551. The next prime is 12125563. The reversal of 12125554 is 45552121.

It is not an unprimeable number, because it can be changed into a prime (12125551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18507 + ... + 19150.

It is an arithmetic number, because the mean of its divisors is an integer number (1355688).

Almost surely, 2^12125554 is an apocalyptic number.

12125554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12125554 is a deficient number, since it is larger than the sum of its proper divisors (9565454).

12125554 is a wasteful number, since it uses less digits than its factorization.

12125554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37689.

The product of its digits is 2000, while the sum is 25.

The square root of 12125554 is about 3482.1766181514. The cubic root of 12125554 is about 229.7385434771.

Adding to 12125554 its reverse (45552121), we get a palindrome (57677675).

The spelling of 12125554 in words is "twelve million, one hundred twenty-five thousand, five hundred fifty-four".