25112012321 has 12 divisors (see below), whose sum is σ = 28912651344. Its totient is φ = 21627567000.

The previous prime is 25112012291. The next prime is 25112012339. The reversal of 25112012321 is 12321021152.

It is a de Polignac number, because none of the positive numbers 2^k-25112012321 is a prime.

It is a super-3 number, since 3×25112012321³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25112012293 and 25112012302.

It is not an unprimeable number, because it can be changed into a prime (25112012371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3157955 + ... + 3165896.

It is an arithmetic number, because the mean of its divisors is an integer number (2409387612).

Almost surely, 2^25112012321 is an apocalyptic number.

It is an amenable number.

25112012321 is a deficient number, since it is larger than the sum of its proper divisors (3800639023).

25112012321 is a wasteful number, since it uses less digits than its factorization.

25112012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323900 (or 6323881 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 25112012321 its reverse (12321021152), we get a palindrome (37433033473).

The spelling of 25112012321 in words is "twenty-five billion, one hundred twelve million, twelve thousand, three hundred twenty-one".