25653851 has 2 divisors, whose sum is σ = 25653852. Its totient is φ = 25653850.

The previous prime is 25653847. The next prime is 25653871. The reversal of 25653851 is 15835652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25653851 - 2² = 25653847 is a prime.

It is a super-2 number, since 2×25653851² = 1316240142260402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25653871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12826925 + 12826926.

It is an arithmetic number, because the mean of its divisors is an integer number (12826926).

Almost surely, 2^25653851 is an apocalyptic number.

25653851 is a deficient number, since it is larger than the sum of its proper divisors (1).

25653851 is an equidigital number, since it uses as much as digits as its factorization.

25653851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

The square root of 25653851 is about 5064.9630798260. The cubic root of 25653851 is about 294.9290301364.

The spelling of 25653851 in words is "twenty-five million, six hundred fifty-three thousand, eight hundred fifty-one".