61214225 has 6 divisors (see below), whose sum is σ = 75905670. Its totient is φ = 48971360.

The previous prime is 61214221. The next prime is 61214227. The reversal of 61214225 is 52241216.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4528384 + 56685841 = 2128^2 + 7529^2 .

It is not a de Polignac number, because 61214225 - 2² = 61214221 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61214225.

It is not an unprimeable number, because it can be changed into a prime (61214221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224260 + ... + 1224309.

It is an arithmetic number, because the mean of its divisors is an integer number (12650945).

Almost surely, 2^61214225 is an apocalyptic number.

It is an amenable number.

61214225 is a deficient number, since it is larger than the sum of its proper divisors (14691445).

61214225 is a wasteful number, since it uses less digits than its factorization.

61214225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448579 (or 2448574 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 61214225 is about 7823.9520064990. The cubic root of 61214225 is about 394.1099974601.

The spelling of 61214225 in words is "sixty-one million, two hundred fourteen thousand, two hundred twenty-five".