65925481 has 4 divisors (see below), whose sum is σ = 67169412. Its totient is φ = 64681552.

The previous prime is 65925467. The next prime is 65925491. The reversal of 65925481 is 18452956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31304025 + 34621456 = 5595^2 + 5884^2 .

It is a cyclic number.

It is not a de Polignac number, because 65925481 - 2¹⁵ = 65892713 is a prime.

It is a super-2 number, since 2×65925481² = 8692338090162722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65925491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621886 + ... + 621991.

It is an arithmetic number, because the mean of its divisors is an integer number (16792353).

Almost surely, 2^65925481 is an apocalyptic number.

It is an amenable number.

65925481 is a deficient number, since it is larger than the sum of its proper divisors (1243931).

65925481 is a wasteful number, since it uses less digits than its factorization.

65925481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243930.

The product of its digits is 86400, while the sum is 40.

The square root of 65925481 is about 8119.4507819187. The cubic root of 65925481 is about 403.9718492459.

The spelling of 65925481 in words is "sixty-five million, nine hundred twenty-five thousand, four hundred eighty-one".