45612225 has 36 divisors (see below), whose sum is σ = 82845516. Its totient is φ = 23984640.

The previous prime is 45612221. The next prime is 45612247. The reversal of 45612225 is 52221654.

45612225 is a `hidden beast` number, since 45 + 612 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3932289 + 41679936 = 1983^2 + 6456^2 .

It is not a de Polignac number, because 45612225 - 2² = 45612221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45612221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15037 + ... + 17813.

Almost surely, 2^45612225 is an apocalyptic number.

45612225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45612225 is a deficient number, since it is larger than the sum of its proper divisors (37233291).

45612225 is a wasteful number, since it uses less digits than its factorization.

45612225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2858 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 45612225 is about 6753.6823289225. The cubic root of 45612225 is about 357.2951211699.

Adding to 45612225 its reverse (52221654), we get a palindrome (97833879).

It can be divided in two parts, 4561 and 2225, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 45612225 in words is "forty-five million, six hundred twelve thousand, two hundred twenty-five".