25874120281 has 4 divisors (see below), whose sum is σ = 25874682292. Its totient is φ = 25873558272.

The previous prime is 25874120269. The next prime is 25874120303. The reversal of 25874120281 is 18202147852.

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 11817646681 + 14056473600 = 108709^2 + 118560^2 .

It is a cyclic number.

It is not a de Polignac number, because 25874120281 - 2⁹ = 25874119769 is a prime.

It is a super-2 number, since 2×25874120281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25874120981) 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 3 ways as a sum of consecutive naturals, for example, 205116 + ... + 306301.

It is an arithmetic number, because the mean of its divisors is an integer number (6468670573).

Almost surely, 2^25874120281 is an apocalyptic number.

It is an amenable number.

25874120281 is a deficient number, since it is larger than the sum of its proper divisors (562011).

25874120281 is an equidigital number, since it uses as much as digits as its factorization.

25874120281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562010.

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 25874120281 in words is "twenty-five billion, eight hundred seventy-four million, one hundred twenty thousand, two hundred eighty-one".