12961250 has 20 divisors (see below), whose sum is σ = 24296910. Its totient is φ = 5184000.

The previous prime is 12961243. The next prime is 12961253. The reversal of 12961250 is 5216921.

12961250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 351649 + 12609601 = 593^2 + 3551^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (12961253) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3935 + ... + 6434.

Almost surely, 2^12961250 is an apocalyptic number.

12961250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12961250 is a deficient number, since it is larger than the sum of its proper divisors (11335660).

12961250 is an equidigital number, since it uses as much as digits as its factorization.

12961250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10391 (or 10376 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12961250 is about 3600.1736069251. The cubic root of 12961250 is about 234.8996100554.

The spelling of 12961250 in words is "twelve million, nine hundred sixty-one thousand, two hundred fifty".