25226145625121 has 8 divisors (see below), whose sum is σ = 28830090206400. Its totient is φ = 21622253416848.

The previous prime is 25226145625099. The next prime is 25226145625141. The reversal of 25226145625121 is 12152654162252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25226145625121 is a prime.

It is a super-2 number, since 2×25226145625121² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25226145625141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12055631 + ... + 13992516.

It is an arithmetic number, because the mean of its divisors is an integer number (3603761275800).

Almost surely, 2^{25226145625121} is an apocalyptic number.

It is an amenable number.

25226145625121 is a deficient number, since it is larger than the sum of its proper divisors (3603944581279).

25226145625121 is a wasteful number, since it uses less digits than its factorization.

25226145625121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26186503.

The product of its digits is 576000, while the sum is 44.

Adding to 25226145625121 its reverse (12152654162252), we get a palindrome (37378799787373).

The spelling of 25226145625121 in words is "twenty-five trillion, two hundred twenty-six billion, one hundred forty-five million, six hundred twenty-five thousand, one hundred twenty-one".