65250261 has 36 divisors (see below), whose sum is σ = 100491300. Its totient is φ = 40744704.

The previous prime is 65250253. The next prime is 65250293. The reversal of 65250261 is 16205256.

65250261 is a `hidden beast` number, since 652 + 5 + 0 + 2 + 6 + 1 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 367236 + 64883025 = 606^2 + 8055^2 .

It is not a de Polignac number, because 65250261 - 2³ = 65250253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65250061) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 733105 + ... + 733193.

It is an arithmetic number, because the mean of its divisors is an integer number (2791425).

Almost surely, 2^65250261 is an apocalyptic number.

It is an amenable number.

65250261 is a deficient number, since it is larger than the sum of its proper divisors (35241039).

65250261 is a wasteful number, since it uses less digits than its factorization.

65250261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65250261 is about 8077.7633661800. The cubic root of 65250261 is about 402.5879308424.

The spelling of 65250261 in words is "sixty-five million, two hundred fifty thousand, two hundred sixty-one".