64738825 has 6 divisors (see below), whose sum is σ = 80276174. Its totient is φ = 51791040.

The previous prime is 64738801. The next prime is 64738831. The reversal of 64738825 is 52883746.

It can be written as a sum of positive squares in 3 ways, for example, as 866761 + 63872064 = 931^2 + 7992^2 .

It is a de Polignac number, because none of the positive numbers 2^k-64738825 is a prime.

It is a super-2 number, since 2×64738825² = 8382230924761250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1294752 + ... + 1294801.

Almost surely, 2^64738825 is an apocalyptic number.

It is an amenable number.

64738825 is a deficient number, since it is larger than the sum of its proper divisors (15537349).

64738825 is a wasteful number, since it uses less digits than its factorization.

64738825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589563 (or 2589558 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 64738825 is about 8046.0440590392. The cubic root of 64738825 is about 401.5333334607.

The spelling of 64738825 in words is "sixty-four million, seven hundred thirty-eight thousand, eight hundred twenty-five".