64006470025 has 9 divisors (see below), whose sum is σ = 79369591431. Its totient is φ = 51204164040.

The previous prime is 64006470019. The next prime is 64006470049. The reversal of 64006470025 is 52007460046.

The square root of 64006470025 is 252995.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23042329209 + 40964140816 = 151797^2 + 202396^2 .

It is not a de Polignac number, because 64006470025 - 2⁵ = 64006469993 is a prime.

It is a super-2 number, since 2×64006470025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1239676 + ... + 1290274.

Almost surely, 2^64006470025 is an apocalyptic number.

64006470025 is the 252995-th square number.

64006470025 is the 126498-th centered octagonal number.

It is an amenable number.

64006470025 is a deficient number, since it is larger than the sum of its proper divisors (15363121406).

64006470025 is an frugal number, since it uses more digits than its factorization.

64006470025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101208 (or 50604 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 64006470025 in words is "sixty-four billion, six million, four hundred seventy thousand, twenty-five".