65821325 has 12 divisors (see below), whose sum is σ = 81760020. Its totient is φ = 52565760.

The previous prime is 65821319. The next prime is 65821333. The reversal of 65821325 is 52312856.

It can be written as a sum of positive squares in 6 ways, for example, as 6869641 + 58951684 = 2621^2 + 7678^2 .

It is not a de Polignac number, because 65821325 - 2⁸ = 65821069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65821291 and 65821300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14981 + ... + 18869.

It is an arithmetic number, because the mean of its divisors is an integer number (6813335).

Almost surely, 2^65821325 is an apocalyptic number.

It is an amenable number.

65821325 is a deficient number, since it is larger than the sum of its proper divisors (15938695).

65821325 is a wasteful number, since it uses less digits than its factorization.

65821325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576 (or 4571 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 65821325 is about 8113.0342659205. The cubic root of 65821325 is about 403.7589913873.

The spelling of 65821325 in words is "sixty-five million, eight hundred twenty-one thousand, three hundred twenty-five".