82423225 has 12 divisors (see below), whose sum is σ = 108217404. Its totient is φ = 62059520.

The previous prime is 82423223. The next prime is 82423337. The reversal of 82423225 is 52232428.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1279161 + 81144064 = 1131^2 + 9008^2 .

It is not a de Polignac number, because 82423225 - 2¹ = 82423223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82423193 and 82423202.

It is not an unprimeable number, because it can be changed into a prime (82423223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96544 + ... + 97393.

It is an arithmetic number, because the mean of its divisors is an integer number (9018117).

Almost surely, 2^82423225 is an apocalyptic number.

82423225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82423225 is a deficient number, since it is larger than the sum of its proper divisors (25794179).

82423225 is a wasteful number, since it uses less digits than its factorization.

82423225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193964 (or 193959 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 82423225 is about 9078.7237539205. The cubic root of 82423225 is about 435.1943025928.

The spelling of 82423225 in words is "eighty-two million, four hundred twenty-three thousand, two hundred twenty-five".