25502131 has 2 divisors, whose sum is σ = 25502132. Its totient is φ = 25502130.

The previous prime is 25502111. The next prime is 25502167. The reversal of 25502131 is 13120552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25502131 - 2¹³ = 25493939 is a prime.

It is a super-2 number, since 2×25502131² = 1300717371082322, 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 = 25502099 and 25502108.

It is not a weakly prime, because it can be changed into another prime (25502111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751065 + 12751066.

It is an arithmetic number, because the mean of its divisors is an integer number (12751066).

Almost surely, 2^25502131 is an apocalyptic number.

25502131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25502131 is an equidigital number, since it uses as much as digits as its factorization.

25502131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25502131 is about 5049.9634652144. The cubic root of 25502131 is about 294.3464647641.

Adding to 25502131 its reverse (13120552), we get a palindrome (38622683).

The spelling of 25502131 in words is "twenty-five million, five hundred two thousand, one hundred thirty-one".