64831825 has 24 divisors (see below), whose sum is σ = 84601728. Its totient is φ = 49188480.

The previous prime is 64831801. The next prime is 64831841. The reversal of 64831825 is 52813846.

It is a happy number.

64831825 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 64831825 - 2⁹ = 64831313 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 78364 + ... + 79186.

It is an arithmetic number, because the mean of its divisors is an integer number (3525072).

Almost surely, 2^64831825 is an apocalyptic number.

It is an amenable number.

64831825 is a deficient number, since it is larger than the sum of its proper divisors (19769903).

64831825 is a wasteful number, since it uses less digits than its factorization.

64831825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 988 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 64831825 is about 8051.8212225558. The cubic root of 64831825 is about 401.7255145457.

It can be divided in two parts, 64831 and 825, that added together give a palindrome (65656).

The spelling of 64831825 in words is "sixty-four million, eight hundred thirty-one thousand, eight hundred twenty-five".