25255123205 has 32 divisors (see below), whose sum is σ = 34305272064. Its totient is φ = 17708714496.

The previous prime is 25255123169. The next prime is 25255123207. The reversal of 25255123205 is 50232155252.

It is a cyclic number.

It is not a de Polignac number, because 25255123205 - 2²⁸ = 24986687749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255123207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143162 + ... + 266468.

It is an arithmetic number, because the mean of its divisors is an integer number (1072039752).

Almost surely, 2^25255123205 is an apocalyptic number.

It is an amenable number.

25255123205 is a deficient number, since it is larger than the sum of its proper divisors (9050148859).

25255123205 is a wasteful number, since it uses less digits than its factorization.

25255123205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123485.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 25255123205 its reverse (50232155252), we get a palindrome (75487278457).

The spelling of 25255123205 in words is "twenty-five billion, two hundred fifty-five million, one hundred twenty-three thousand, two hundred five".