65072725 has 6 divisors (see below), whose sum is σ = 80690210. Its totient is φ = 52058160.

The previous prime is 65072669. The next prime is 65072759. The reversal of 65072725 is 52727056.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1695204 + 63377521 = 1302^2 + 7961^2 .

It is not a de Polignac number, because 65072725 - 2⁹ = 65072213 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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, 1301430 + ... + 1301479.

Almost surely, 2^65072725 is an apocalyptic number.

It is an amenable number.

65072725 is a deficient number, since it is larger than the sum of its proper divisors (15617485).

65072725 is a wasteful number, since it uses less digits than its factorization.

65072725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602919 (or 2602914 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 65072725 is about 8066.7667004817. The cubic root of 65072725 is about 402.2224724208. Note that the first 3 decimals are identical.

The spelling of 65072725 in words is "sixty-five million, seventy-two thousand, seven hundred twenty-five".