25243345105 has 16 divisors (see below), whose sum is σ = 34111830528. Its totient is φ = 17766576000.

The previous prime is 25243345073. The next prime is 25243345129. The reversal of 25243345105 is 50154334252.

It is not a de Polignac number, because 25243345105 - 2⁵ = 25243345073 is a prime.

It is a super-2 number, since 2×25243345105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 7401036 + ... + 7404445.

It is an arithmetic number, because the mean of its divisors is an integer number (2131989408).

Almost surely, 2^25243345105 is an apocalyptic number.

It is an amenable number.

25243345105 is a deficient number, since it is larger than the sum of its proper divisors (8868485423).

25243345105 is a wasteful number, since it uses less digits than its factorization.

25243345105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14805528.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 25243345105 its reverse (50154334252), we get a palindrome (75397679357).

The spelling of 25243345105 in words is "twenty-five billion, two hundred forty-three million, three hundred forty-five thousand, one hundred five".