37222225 has 12 divisors (see below), whose sum is σ = 47748060. Its totient is φ = 28750400.

The previous prime is 37222223. The next prime is 37222253. The reversal of 37222225 is 52222273.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 61009 + 37161216 = 247^2 + 6096^2 .

It is not a de Polignac number, because 37222225 - 2¹ = 37222223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 37222225.

It is not an unprimeable number, because it can be changed into a prime (37222223) 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, 24946 + ... + 26395.

It is an arithmetic number, because the mean of its divisors is an integer number (3979005).

Almost surely, 2^37222225 is an apocalyptic number.

It is an amenable number.

37222225 is a deficient number, since it is larger than the sum of its proper divisors (10525835).

37222225 is a wasteful number, since it uses less digits than its factorization.

37222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51380 (or 51375 counting only the distinct ones).

The product of its digits is 3360, while the sum is 25.

The square root of 37222225 is about 6101.0019668904. The cubic root of 37222225 is about 333.8879738321.

Adding to 37222225 its reverse (52222273), we get a palindrome (89444498).

The spelling of 37222225 in words is "thirty-seven million, two hundred twenty-two thousand, two hundred twenty-five".