65189825 has 12 divisors (see below), whose sum is σ = 83623740. Its totient is φ = 50352960.

The previous prime is 65189821. The next prime is 65189837. The reversal of 65189825 is 52898156.

It can be written as a sum of positive squares in 6 ways, for example, as 274576 + 64915249 = 524^2 + 8057^2 .

It is not a de Polignac number, because 65189825 - 2² = 65189821 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65189821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44234 + ... + 45683.

It is an arithmetic number, because the mean of its divisors is an integer number (6968645).

Almost surely, 2^65189825 is an apocalyptic number.

It is an amenable number.

65189825 is a deficient number, since it is larger than the sum of its proper divisors (18433915).

65189825 is a wasteful number, since it uses less digits than its factorization.

65189825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89956 (or 89951 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 65189825 is about 8074.0216125547. The cubic root of 65189825 is about 402.4635976492.

The spelling of 65189825 in words is "sixty-five million, one hundred eighty-nine thousand, eight hundred twenty-five".