25442004325121 has 16 divisors (see below), whose sum is σ = 27205137590400. Its totient is φ = 23709410857728.

The previous prime is 25442004325117. The next prime is 25442004325147. The reversal of 25442004325121 is 12152340024452.

It is a cyclic number.

It is not a de Polignac number, because 25442004325121 - 2² = 25442004325117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25442004325421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13551341 + ... + 15314138.

It is an arithmetic number, because the mean of its divisors is an integer number (1700321099400).

Almost surely, 2^{25442004325121} is an apocalyptic number.

It is an amenable number.

25442004325121 is a deficient number, since it is larger than the sum of its proper divisors (1763133265279).

25442004325121 is a wasteful number, since it uses less digits than its factorization.

25442004325121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28866008.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 25442004325121 its reverse (12152340024452), we get a palindrome (37594344349573).

The spelling of 25442004325121 in words is "twenty-five trillion, four hundred forty-two billion, four million, three hundred twenty-five thousand, one hundred twenty-one".