12400250 has 32 divisors (see below), whose sum is σ = 23424336. Its totient is φ = 4915200.

The previous prime is 12400247. The next prime is 12400303. The reversal of 12400250 is 5200421.

It can be written as a sum of positive squares in 8 ways, for example, as 1661521 + 10738729 = 1289^2 + 3277^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48122 + ... + 48378.

Almost surely, 2^12400250 is an apocalyptic number.

12400250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12400250 is a deficient number, since it is larger than the sum of its proper divisors (11024086).

12400250 is a wasteful number, since it uses less digits than its factorization.

12400250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12400250 is about 3521.3988697675. The cubic root of 12400250 is about 231.4604609455.

Adding to 12400250 its reverse (5200421), we get a palindrome (17600671).

It can be divided in two parts, 124002 and 50, that multiplied together give a square (6200100 = 2490²).

The spelling of 12400250 in words is "twelve million, four hundred thousand, two hundred fifty".