64345025 has 12 divisors (see below), whose sum is σ = 80497452. Its totient is φ = 51018240.

The previous prime is 64345013. The next prime is 64345049. The reversal of 64345025 is 52054346.

It can be written as a sum of positive squares in 6 ways, for example, as 3489424 + 60855601 = 1868^2 + 7801^2 .

It is not a de Polignac number, because 64345025 - 2⁸ = 64344769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8564 + ... + 14213.

It is an arithmetic number, because the mean of its divisors is an integer number (6708121).

Almost surely, 2^64345025 is an apocalyptic number.

It is an amenable number.

64345025 is a deficient number, since it is larger than the sum of its proper divisors (16152427).

64345025 is a wasteful number, since it uses less digits than its factorization.

64345025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22900 (or 22895 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 64345025 is about 8021.5350775272. The cubic root of 64345025 is about 400.7175142470.

The spelling of 64345025 in words is "sixty-four million, three hundred forty-five thousand, twenty-five".