64524425 has 18 divisors (see below), whose sum is σ = 93074958. Its totient is φ = 44244480.

The previous prime is 64524419. The next prime is 64524431. The reversal of 64524425 is 52442546.

It is an interprime number because it is at equal distance from previous prime (64524419) and next prime (64524431).

It can be written as a sum of positive squares in 3 ways, for example, as 2729104 + 61795321 = 1652^2 + 7861^2 .

It is not a de Polignac number, because 64524425 - 2⁸ = 64524169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64524391 and 64524400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25112 + ... + 27561.

It is an arithmetic number, because the mean of its divisors is an integer number (5170831).

Almost surely, 2^64524425 is an apocalyptic number.

It is an amenable number.

64524425 is a deficient number, since it is larger than the sum of its proper divisors (28550533).

64524425 is a wasteful number, since it uses less digits than its factorization.

64524425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52697 (or 52685 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 64524425 is about 8032.7096922520. The cubic root of 64524425 is about 401.0895814193.

The spelling of 64524425 in words is "sixty-four million, five hundred twenty-four thousand, four hundred twenty-five".