82225531 has 2 divisors, whose sum is σ = 82225532. Its totient is φ = 82225530.

The previous prime is 82225489. The next prime is 82225543. The reversal of 82225531 is 13552228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82225531 - 2⁹ = 82225019 is a prime.

It is a super-2 number, since 2×82225531² = 13522075896463922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82225531.

It is not a weakly prime, because it can be changed into another prime (82225571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41112765 + 41112766.

It is an arithmetic number, because the mean of its divisors is an integer number (41112766).

Almost surely, 2^82225531 is an apocalyptic number.

82225531 is a deficient number, since it is larger than the sum of its proper divisors (1).

82225531 is an equidigital number, since it uses as much as digits as its factorization.

82225531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 82225531 is about 9067.8294536234. The cubic root of 82225531 is about 434.8460828600.

Adding to 82225531 its reverse (13552228), we get a palindrome (95777759).

The spelling of 82225531 in words is "eighty-two million, two hundred twenty-five thousand, five hundred thirty-one".