64804425 has 96 divisors (see below), whose sum is σ = 133062912. Its totient is φ = 27156480.

The previous prime is 64804423. The next prime is 64804429. The reversal of 64804425 is 52440846.

It is not a de Polignac number, because 64804425 - 2¹ = 64804423 is a prime.

It is a super-2 number, since 2×64804425² = 8399226999161250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64804423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 472957 + ... + 473093.

It is an arithmetic number, because the mean of its divisors is an integer number (1386072).

Almost surely, 2^64804425 is an apocalyptic number.

It is an amenable number.

64804425 is an abundant number, since it is smaller than the sum of its proper divisors (68258487).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64804425 is a wasteful number, since it uses less digits than its factorization.

64804425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 64804425 is about 8050.1195643295. The cubic root of 64804425 is about 401.6689125597.

The spelling of 64804425 in words is "sixty-four million, eight hundred four thousand, four hundred twenty-five".