15225443 has 2 divisors, whose sum is σ = 15225444. Its totient is φ = 15225442.

The previous prime is 15225439. The next prime is 15225449. The reversal of 15225443 is 34452251.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15225443 - 2² = 15225439 is a prime.

It is a super-2 number, since 2×15225443² = 463628229092498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15225449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612721 + 7612722.

It is an arithmetic number, because the mean of its divisors is an integer number (7612722).

Almost surely, 2^15225443 is an apocalyptic number.

15225443 is a deficient number, since it is larger than the sum of its proper divisors (1).

15225443 is an equidigital number, since it uses as much as digits as its factorization.

15225443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 15225443 is about 3901.9793694995. The cubic root of 15225443 is about 247.8506026577.

Adding to 15225443 its reverse (34452251), we get a palindrome (49677694).

The spelling of 15225443 in words is "fifteen million, two hundred twenty-five thousand, four hundred forty-three".