61065225 has 48 divisors (see below), whose sum is σ = 120825600. Its totient is φ = 30058560.

The previous prime is 61065223. The next prime is 61065233. The reversal of 61065225 is 52256016.

61065225 is a `hidden beast` number, since 6 + 1 + 0 + 652 + 2 + 5 = 666.

It is not a de Polignac number, because 61065225 - 2¹ = 61065223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61065223) 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 47 ways as a sum of consecutive naturals, for example, 5296 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (2517200).

Almost surely, 2^61065225 is an apocalyptic number.

61065225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61065225 is a deficient number, since it is larger than the sum of its proper divisors (59760375).

61065225 is a wasteful number, since it uses less digits than its factorization.

61065225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 61065225 is about 7814.4241630462. The cubic root of 61065225 is about 393.7899732661.

The spelling of 61065225 in words is "sixty-one million, sixty-five thousand, two hundred twenty-five".