12531250 has 28 divisors (see below), whose sum is σ = 23554386. Its totient is φ = 5000000.

The previous prime is 12531247. The next prime is 12531263. The reversal of 12531250 is 5213521.

It can be written as a sum of positive squares in 7 ways, for example, as 2627641 + 9903609 = 1621^2 + 3147^2 .

It is a super-3 number, since 3×12531250³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 31050 + ... + 31450.

Almost surely, 2^12531250 is an apocalyptic number.

12531250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12531250 is a deficient number, since it is larger than the sum of its proper divisors (11023136).

12531250 is an frugal number, since it uses more digits than its factorization.

12531250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12531250 is about 3539.9505646266. The cubic root of 12531250 is about 232.2726802726.

Adding to 12531250 its reverse (5213521), we get a palindrome (17744771).

It can be divided in two parts, 125 and 31250, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 12531250 in words is "twelve million, five hundred thirty-one thousand, two hundred fifty".