25344321601 has 3 divisors (see below), whose sum is σ = 25344480801. Its totient is φ = 25344162402.

The previous prime is 25344321557. The next prime is 25344321623. The reversal of 25344321601 is 10612344352.

The square root of 25344321601 is 159199.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-25344321601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25344321661) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 79600 + ... + 238798.

It is an arithmetic number, because the mean of its divisors is an integer number (8448160267).

Almost surely, 2^25344321601 is an apocalyptic number.

25344321601 is the 159199-th square number.

25344321601 is the 79600-th centered octagonal number.

It is an amenable number.

25344321601 is a deficient number, since it is larger than the sum of its proper divisors (159200).

25344321601 is an frugal number, since it uses more digits than its factorization.

25344321601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318398 (or 159199 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 25344321601 its reverse (10612344352), we get a palindrome (35956665953).

The spelling of 25344321601 in words is "twenty-five billion, three hundred forty-four million, three hundred twenty-one thousand, six hundred one".