25551433201 has 16 divisors (see below), whose sum is σ = 29984947200. Its totient is φ = 21320956368.

The previous prime is 25551433199. The next prime is 25551433207. The reversal of 25551433201 is 10233415552.

It is a cyclic number.

It is not a de Polignac number, because 25551433201 - 2¹ = 25551433199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25551433207) 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, 257791 + ... + 342868.

It is an arithmetic number, because the mean of its divisors is an integer number (1874059200).

Almost surely, 2^25551433201 is an apocalyptic number.

It is an amenable number.

25551433201 is a deficient number, since it is larger than the sum of its proper divisors (4433513999).

25551433201 is a wasteful number, since it uses less digits than its factorization.

25551433201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600828.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 25551433201 its reverse (10233415552), we get a palindrome (35784848753).

The spelling of 25551433201 in words is "twenty-five billion, five hundred fifty-one million, four hundred thirty-three thousand, two hundred one".