12225519 has 8 divisors (see below), whose sum is σ = 18111920. Its totient is φ = 8150328.

The previous prime is 12225491. The next prime is 12225527. The reversal of 12225519 is 91552221.

12225519 is a `hidden beast` number, since 122 + 25 + 519 = 666.

It is not a de Polignac number, because 12225519 - 2¹³ = 12217327 is a prime.

It is a super-2 number, since 2×12225519² = 298926629638722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 452797 = 12225519 / (1 + 2 + 2 + 2 + 5 + 5 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12225492 and 12225501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226372 + ... + 226425.

It is an arithmetic number, because the mean of its divisors is an integer number (2263990).

Almost surely, 2^12225519 is an apocalyptic number.

12225519 is a deficient number, since it is larger than the sum of its proper divisors (5886401).

12225519 is an equidigital number, since it uses as much as digits as its factorization.

12225519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452806 (or 452800 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12225519 is about 3496.5009652508. The cubic root of 12225519 is about 230.3681501655.

The spelling of 12225519 in words is "twelve million, two hundred twenty-five thousand, five hundred nineteen".