25422122505 has 32 divisors (see below), whose sum is σ = 44057534976. Its totient is φ = 12443145984.

The previous prime is 25422122471. The next prime is 25422122521. The reversal of 25422122505 is 50522122452.

It is not a de Polignac number, because 25422122505 - 2⁷ = 25422122377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343057 + ... + 410526.

It is an arithmetic number, because the mean of its divisors is an integer number (1376797968).

Almost surely, 2^25422122505 is an apocalyptic number.

It is an amenable number.

25422122505 is a deficient number, since it is larger than the sum of its proper divisors (18635412471).

25422122505 is a wasteful number, since it uses less digits than its factorization.

25422122505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753777.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 25422122505 its reverse (50522122452), we get a palindrome (75944244957).

The spelling of 25422122505 in words is "twenty-five billion, four hundred twenty-two million, one hundred twenty-two thousand, five hundred five".