25502443 has 2 divisors, whose sum is σ = 25502444. Its totient is φ = 25502442.

The previous prime is 25502417. The next prime is 25502459. The reversal of 25502443 is 34420552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25502443 - 2¹⁷ = 25371371 is a prime.

It is not a weakly prime, because it can be changed into another prime (25500443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751221 + 12751222.

It is an arithmetic number, because the mean of its divisors is an integer number (12751222).

Almost surely, 2^25502443 is an apocalyptic number.

25502443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25502443 is an equidigital number, since it uses as much as digits as its factorization.

25502443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25502443 is about 5049.9943564325. The cubic root of 25502443 is about 294.3476651307.

Adding to 25502443 its reverse (34420552), we get a palindrome (59922995).

The spelling of 25502443 in words is "twenty-five million, five hundred two thousand, four hundred forty-three".