25552831 has 2 divisors, whose sum is σ = 25552832. Its totient is φ = 25552830.

The previous prime is 25552801. The next prime is 25552843. The reversal of 25552831 is 13825552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25552831 - 2¹¹ = 25550783 is a prime.

It is a super-2 number, since 2×25552831² = 1305894344229122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25552793 and 25552802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25552801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776415 + 12776416.

It is an arithmetic number, because the mean of its divisors is an integer number (12776416).

Almost surely, 2^25552831 is an apocalyptic number.

25552831 is a deficient number, since it is larger than the sum of its proper divisors (1).

25552831 is an equidigital number, since it uses as much as digits as its factorization.

25552831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 25552831 is about 5054.9808110417. The cubic root of 25552831 is about 294.5413960179.

The spelling of 25552831 in words is "twenty-five million, five hundred fifty-two thousand, eight hundred thirty-one".