12505454 has 8 divisors (see below), whose sum is σ = 20201160. Its totient is φ = 5771736.

The previous prime is 12505417. The next prime is 12505457. The reversal of 12505454 is 45450521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12505454² = 312772759492232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 480979 = 12505454 / (1 + 2 + 5 + 0 + 5 + 4 + 5 + 4).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240464 + ... + 240515.

It is an arithmetic number, because the mean of its divisors is an integer number (2525145).

Almost surely, 2^12505454 is an apocalyptic number.

12505454 is a deficient number, since it is larger than the sum of its proper divisors (7695706).

12505454 is a wasteful number, since it uses less digits than its factorization.

12505454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480994.

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

The square root of 12505454 is about 3536.3051338933. The cubic root of 12505454 is about 232.1131904067.

Adding to 12505454 its reverse (45450521), we get a palindrome (57955975).

The spelling of 12505454 in words is "twelve million, five hundred five thousand, four hundred fifty-four".