25670853 has 12 divisors (see below), whose sum is σ = 39932620. Its totient is φ = 15797376.

The previous prime is 25670851. The next prime is 25670857. The reversal of 25670853 is 35807652.

It can be written as a sum of positive squares in 2 ways, for example, as 10131489 + 15539364 = 3183^2 + 3942^2 .

It is not a de Polignac number, because 25670853 - 2¹ = 25670851 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25670851) 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, 109588 + ... + 109821.

Almost surely, 2^25670853 is an apocalyptic number.

It is an amenable number.

25670853 is a deficient number, since it is larger than the sum of its proper divisors (14261767).

25670853 is a wasteful number, since it uses less digits than its factorization.

25670853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219428 (or 219425 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25670853 is about 5066.6411951114. The cubic root of 25670853 is about 294.9941701424.

The spelling of 25670853 in words is "twenty-five million, six hundred seventy thousand, eight hundred fifty-three".