25127921898241 has 4 divisors (see below), whose sum is σ = 25127985980500. Its totient is φ = 25127857815984.

The previous prime is 25127921898181. The next prime is 25127921898257. The reversal of 25127921898241 is 14289812972152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13011458979600 + 12116462918641 = 3607140^2 + 3480871^2 .

It is a cyclic number.

It is not a de Polignac number, because 25127921898241 - 2³⁵ = 25093562159873 is a prime.

It is a super-3 number, since 3×25127921898241³ (a number of 41 digits) contains 333 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 25127921898241.

It is not an unprimeable number, because it can be changed into a prime (25127921898041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31449306 + ... + 32238403.

It is an arithmetic number, because the mean of its divisors is an integer number (6281996495125).

Almost surely, 2^{25127921898241} is an apocalyptic number.

It is an amenable number.

25127921898241 is a deficient number, since it is larger than the sum of its proper divisors (64082259).

25127921898241 is an equidigital number, since it uses as much as digits as its factorization.

25127921898241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64082258.

The product of its digits is 11612160, while the sum is 61.

The spelling of 25127921898241 in words is "twenty-five trillion, one hundred twenty-seven billion, nine hundred twenty-one million, eight hundred ninety-eight thousand, two hundred forty-one".