52222225 has 24 divisors (see below), whose sum is σ = 71995392. Its totient is φ = 37252800.

The previous prime is 52222223. The next prime is 52222231.

52222225 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 52222225 - 2¹ = 52222223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52222196 and 52222205.

It is not an unprimeable number, because it can be changed into a prime (52222223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12784 + ... + 16366.

It is an arithmetic number, because the mean of its divisors is an integer number (2999808).

Almost surely, 2^52222225 is an apocalyptic number.

52222225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52222225 is a deficient number, since it is larger than the sum of its proper divisors (19773167).

52222225 is a wasteful number, since it uses less digits than its factorization.

52222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657 (or 3652 counting only the distinct ones).

The product of its digits is 1600, while the sum is 22.

The square root of 52222225 is about 7226.4946550869. The cubic root of 52222225 is about 373.7820634454.

It can be divided in two parts, 5222 and 2225, that added together give a palindrome (7447).

The spelling of 52222225 in words is "fifty-two million, two hundred twenty-two thousand, two hundred twenty-five".