65391825 has 48 divisors (see below), whose sum is σ = 115121600. Its totient is φ = 32659200.

The previous prime is 65391811. The next prime is 65391827. The reversal of 65391825 is 52819356.

It is not a de Polignac number, because 65391825 - 2⁸ = 65391569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65391827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155115 + ... + 155535.

Almost surely, 2^65391825 is an apocalyptic number.

It is an amenable number.

65391825 is a deficient number, since it is larger than the sum of its proper divisors (49729775).

65391825 is a wasteful number, since it uses less digits than its factorization.

65391825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 557 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 65391825 is about 8086.5211927009. The cubic root of 65391825 is about 402.8788660349.

The spelling of 65391825 in words is "sixty-five million, three hundred ninety-one thousand, eight hundred twenty-five".