25612651 has 2 divisors, whose sum is σ = 25612652. Its totient is φ = 25612650.

The previous prime is 25612633. The next prime is 25612663. The reversal of 25612651 is 15621652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25612651 - 2¹¹ = 25610603 is a prime.

It is not a weakly prime, because it can be changed into another prime (25612681) 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 as a sum of consecutive naturals, namely, 12806325 + 12806326.

It is an arithmetic number, because the mean of its divisors is an integer number (12806326).

Almost surely, 2^25612651 is an apocalyptic number.

25612651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25612651 is an equidigital number, since it uses as much as digits as its factorization.

25612651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 25612651 is about 5060.8942885621. The cubic root of 25612651 is about 294.7710605238.

Subtracting from 25612651 its reverse (15621652), we obtain a palindrome (9990999).

The spelling of 25612651 in words is "twenty-five million, six hundred twelve thousand, six hundred fifty-one".