25065729 has 12 divisors (see below), whose sum is σ = 38991316. Its totient is φ = 15424992.

The previous prime is 25065727. The next prime is 25065743. The reversal of 25065729 is 92756052.

It can be written as a sum of positive squares in 2 ways, for example, as 7551504 + 17514225 = 2748^2 + 4185^2 .

It is not a de Polignac number, because 25065729 - 2¹ = 25065727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25065693 and 25065702.

It is not an unprimeable number, because it can be changed into a prime (25065727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107002 + ... + 107235.

Almost surely, 2^25065729 is an apocalyptic number.

It is an amenable number.

25065729 is a deficient number, since it is larger than the sum of its proper divisors (13925587).

25065729 is a wasteful number, since it uses less digits than its factorization.

25065729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214256 (or 214253 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 25065729 is about 5006.5685853686. The cubic root of 25065729 is about 292.6578065844.

The spelling of 25065729 in words is "twenty-five million, sixty-five thousand, seven hundred twenty-nine".