12450905 has 8 divisors (see below), whose sum is σ = 15073992. Its totient is φ = 9872128.

The previous prime is 12450883. The next prime is 12450929. The reversal of 12450905 is 50905421.

It can be written as a sum of positive squares in 4 ways, for example, as 644809 + 11806096 = 803^2 + 3436^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12450905 - 2¹⁰ = 12449881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10454 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (1884249).

Almost surely, 2^12450905 is an apocalyptic number.

It is an amenable number.

12450905 is a deficient number, since it is larger than the sum of its proper divisors (2623087).

12450905 is a wasteful number, since it uses less digits than its factorization.

12450905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22155.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12450905 is about 3528.5839936156. The cubic root of 12450905 is about 231.7752046201.

The spelling of 12450905 in words is "twelve million, four hundred fifty thousand, nine hundred five".