64264042025 has 6 divisors (see below), whose sum is σ = 79687412142. Its totient is φ = 51411233600.

The previous prime is 64264041997. The next prime is 64264042027. The reversal of 64264042025 is 52024046246.

It can be written as a sum of positive squares in 3 ways, for example, as 12504606976 + 51759435049 = 111824^2 + 227507^2 .

It is not a de Polignac number, because 64264042025 - 2²⁰ = 64262993449 is a prime.

It is a super-2 number, since 2×64264042025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64264042027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1285280816 + ... + 1285280865.

It is an arithmetic number, because the mean of its divisors is an integer number (13281235357).

Almost surely, 2^64264042025 is an apocalyptic number.

It is an amenable number.

64264042025 is a deficient number, since it is larger than the sum of its proper divisors (15423370117).

64264042025 is a wasteful number, since it uses less digits than its factorization.

64264042025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570561691 (or 2570561686 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 64264042025 in words is "sixty-four billion, two hundred sixty-four million, forty-two thousand, twenty-five".