25030001321 has 32 divisors (see below), whose sum is σ = 28387860480. Its totient is φ = 21896449344.

The previous prime is 25030001219. The next prime is 25030001341. The reversal of 25030001321 is 12310003052.

It is a cyclic number.

It is not a de Polignac number, because 25030001321 - 2¹⁰ = 25030000297 is a prime.

It is a super-2 number, since 2×25030001321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25030001321.

It is not an unprimeable number, because it can be changed into a prime (25030001341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16220876 + ... + 16222418.

It is an arithmetic number, because the mean of its divisors is an integer number (887120640).

Almost surely, 2^25030001321 is an apocalyptic number.

It is an amenable number.

25030001321 is a deficient number, since it is larger than the sum of its proper divisors (3357859159).

25030001321 is a wasteful number, since it uses less digits than its factorization.

25030001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 25030001321 its reverse (12310003052), we get a palindrome (37340004373).

The spelling of 25030001321 in words is "twenty-five billion, thirty million, one thousand, three hundred twenty-one".