25212511 has 2 divisors, whose sum is σ = 25212512. Its totient is φ = 25212510.

The previous prime is 25212493. The next prime is 25212527. The reversal of 25212511 is 11521252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25212511 - 2⁹ = 25211999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25212541) 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, 12606255 + 12606256.

It is an arithmetic number, because the mean of its divisors is an integer number (12606256).

Almost surely, 2^25212511 is an apocalyptic number.

25212511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25212511 is an equidigital number, since it uses as much as digits as its factorization.

25212511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200, while the sum is 19.

The square root of 25212511 is about 5021.2061300050. The cubic root of 25212511 is about 293.2279518438.

Adding to 25212511 its reverse (11521252), we get a palindrome (36733763).

It can be divided in two parts, 2521251 and 1, that added together give a palindrome (2521252).

The spelling of 25212511 in words is "twenty-five million, two hundred twelve thousand, five hundred eleven".