25320325521101 has 4 divisors (see below), whose sum is σ = 27268042868892. Its totient is φ = 23372608173312.

The previous prime is 25320325521083. The next prime is 25320325521121. The reversal of 25320325521101 is 10112552302352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7582456147876 + 17737869373225 = 2753626^2 + 4211635^2 .

It is a cyclic number.

It is not a de Polignac number, because 25320325521101 - 2³⁰ = 25319251779277 is a prime.

It is a super-2 number, since 2×25320325521101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320325521121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973858673876 + ... + 973858673901.

It is an arithmetic number, because the mean of its divisors is an integer number (6817010717223).

Almost surely, 2^{25320325521101} is an apocalyptic number.

It is an amenable number.

25320325521101 is a deficient number, since it is larger than the sum of its proper divisors (1947717347791).

25320325521101 is a wasteful number, since it uses less digits than its factorization.

25320325521101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947717347790.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 25320325521101 its reverse (10112552302352), we get a palindrome (35432877823453).

The spelling of 25320325521101 in words is "twenty-five trillion, three hundred twenty billion, three hundred twenty-five million, five hundred twenty-one thousand, one hundred one".