25501243011122 has 4 divisors (see below), whose sum is σ = 38251864516686. Its totient is φ = 12750621505560.

The previous prime is 25501243011119. The next prime is 25501243011161. The reversal of 25501243011122 is 22111034210552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19347673162801 + 6153569848321 = 4398599^2 + 2480639^2 .

It is a super-2 number, since 2×25501243011122² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375310752779 + ... + 6375310752782.

Almost surely, 2^{25501243011122} is an apocalyptic number.

25501243011122 is a deficient number, since it is larger than the sum of its proper divisors (12750621505564).

25501243011122 is a wasteful number, since it uses less digits than its factorization.

25501243011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12750621505563.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 25501243011122 its reverse (22111034210552), we get a palindrome (47612277221674).

The spelling of 25501243011122 in words is "twenty-five trillion, five hundred one billion, two hundred forty-three million, eleven thousand, one hundred twenty-two".