25255511 has 2 divisors, whose sum is σ = 25255512. Its totient is φ = 25255510.

The previous prime is 25255501. The next prime is 25255513. The reversal of 25255511 is 11555252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25255511 - 2²² = 21061207 is a prime.

It is a super-2 number, since 2×25255511² = 1275681671742242, which contains 22 as substring.

Together with 25255513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25255513) 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, 12627755 + 12627756.

It is an arithmetic number, because the mean of its divisors is an integer number (12627756).

Almost surely, 2^25255511 is an apocalyptic number.

25255511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255511 is an equidigital number, since it uses as much as digits as its factorization.

25255511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500, while the sum is 26.

The square root of 25255511 is about 5025.4861456381. The cubic root of 25255511 is about 293.3945574971.

The spelling of 25255511 in words is "twenty-five million, two hundred fifty-five thousand, five hundred eleven".