45225220 has 24 divisors (see below), whose sum is σ = 95131008. Its totient is φ = 18060000.

The previous prime is 45225197. The next prime is 45225221. The reversal of 45225220 is 2252254.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 45225191 and 45225200.

It is not an unprimeable number, because it can be changed into a prime (45225221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13515 + ... + 16525.

It is an arithmetic number, because the mean of its divisors is an integer number (3963792).

Almost surely, 2^45225220 is an apocalyptic number.

It is an amenable number.

45225220 is an abundant number, since it is smaller than the sum of its proper divisors (49905788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45225220 is a wasteful number, since it uses less digits than its factorization.

45225220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771 (or 3769 counting only the distinct ones).

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

The square root of 45225220 is about 6724.9698884084. The cubic root of 45225220 is about 356.2817384260.

Adding to 45225220 its reverse (2252254), we get a palindrome (47477474).

The spelling of 45225220 in words is "forty-five million, two hundred twenty-five thousand, two hundred twenty".