64710025 has 6 divisors (see below), whose sum is σ = 80240462. Its totient is φ = 51768000.

The previous prime is 64710001. The next prime is 64710043. The reversal of 64710025 is 52001746.

It can be written as a sum of positive squares in 3 ways, for example, as 13329801 + 51380224 = 3651^2 + 7168^2 .

It is not a de Polignac number, because 64710025 - 2¹⁵ = 64677257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2588401 = 64710025 / (6 + 4 + 7 + 1 + 0 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1294176 + ... + 1294225.

Almost surely, 2^64710025 is an apocalyptic number.

It is an amenable number.

64710025 is a deficient number, since it is larger than the sum of its proper divisors (15530437).

64710025 is a wasteful number, since it uses less digits than its factorization.

64710025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588411 (or 2588406 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 64710025 is about 8044.2541605795. The cubic root of 64710025 is about 401.4737819976.

The spelling of 64710025 in words is "sixty-four million, seven hundred ten thousand, twenty-five".