64300025 has 6 divisors (see below), whose sum is σ = 79732062. Its totient is φ = 51440000.

The previous prime is 64300021. The next prime is 64300031. The reversal of 64300025 is 52000346.

It can be written as a sum of positive squares in 3 ways, for example, as 123904 + 64176121 = 352^2 + 8011^2 .

It is not a de Polignac number, because 64300025 - 2² = 64300021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64300021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1285976 + ... + 1286025.

It is an arithmetic number, because the mean of its divisors is an integer number (13288677).

Almost surely, 2^64300025 is an apocalyptic number.

It is an amenable number.

64300025 is a deficient number, since it is larger than the sum of its proper divisors (15432037).

64300025 is a wasteful number, since it uses less digits than its factorization.

64300025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572011 (or 2572006 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 64300025 is about 8018.7296375423. The cubic root of 64300025 is about 400.6240778939.

The spelling of 64300025 in words is "sixty-four million, three hundred thousand, twenty-five".