12506290 has 8 divisors (see below), whose sum is σ = 22511340. Its totient is φ = 5002512.

The previous prime is 12506269. The next prime is 12506303. The reversal of 12506290 is 9260521.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 720801 = 3433^2 + 849^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625305 + ... + 625324.

Almost surely, 2^12506290 is an apocalyptic number.

12506290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12506290 is a deficient number, since it is larger than the sum of its proper divisors (10005050).

12506290 is a wasteful number, since it uses less digits than its factorization.

12506290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250636.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12506290 is about 3536.4233343874. The cubic root of 12506290 is about 232.1183626114.

The spelling of 12506290 in words is "twelve million, five hundred six thousand, two hundred ninety".