65213225 has 48 divisors (see below), whose sum is σ = 106183680. Its totient is φ = 38491200.

The previous prime is 65213221. The next prime is 65213227. The reversal of 65213225 is 52231256.

65213225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65213225 - 2² = 65213221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65213194 and 65213203.

It is not an unprimeable number, because it can be changed into a prime (65213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35684 + ... + 37466.

It is an arithmetic number, because the mean of its divisors is an integer number (2212160).

Almost surely, 2^65213225 is an apocalyptic number.

It is an amenable number.

65213225 is a deficient number, since it is larger than the sum of its proper divisors (40970455).

65213225 is a wasteful number, since it uses less digits than its factorization.

65213225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830 (or 1825 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 65213225 is about 8075.4705745238. The cubic root of 65213225 is about 402.5117468891.

The spelling of 65213225 in words is "sixty-five million, two hundred thirteen thousand, two hundred twenty-five".