64494825 has 24 divisors (see below), whose sum is σ = 107243136. Its totient is φ = 34200000.

The previous prime is 64494823. The next prime is 64494827. The reversal of 64494825 is 52849446.

It is an interprime number because it is at equal distance from previous prime (64494823) and next prime (64494827).

It is not a de Polignac number, because 64494825 - 2¹ = 64494823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64494823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11200 + ... + 15950.

It is an arithmetic number, because the mean of its divisors is an integer number (4468464).

Almost surely, 2^64494825 is an apocalyptic number.

It is an amenable number.

64494825 is a deficient number, since it is larger than the sum of its proper divisors (42748311).

64494825 is a wasteful number, since it uses less digits than its factorization.

64494825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945 (or 4940 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 64494825 is about 8030.8670142146. The cubic root of 64494825 is about 401.0282399583.

The spelling of 64494825 in words is "sixty-four million, four hundred ninety-four thousand, eight hundred twenty-five".