25222004001 has 24 divisors (see below), whose sum is σ = 37217456640. Its totient is φ = 16452254016.

The previous prime is 25222003993. The next prime is 25222004029. The reversal of 25222004001 is 10040022252.

It is not a de Polignac number, because 25222004001 - 2³ = 25222003993 is a prime.

It is a super-2 number, since 2×25222004001² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25222024001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2125581 + ... + 2137413.

It is an arithmetic number, because the mean of its divisors is an integer number (1550727360).

Almost surely, 2^25222004001 is an apocalyptic number.

It is an amenable number.

25222004001 is a deficient number, since it is larger than the sum of its proper divisors (11995452639).

25222004001 is a wasteful number, since it uses less digits than its factorization.

25222004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925 (or 16922 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 25222004001 its reverse (10040022252), we get a palindrome (35262026253).

The spelling of 25222004001 in words is "twenty-five billion, two hundred twenty-two million, four thousand, one".