25278286013 has 4 divisors (see below), whose sum is σ = 25287155328. Its totient is φ = 25269416700.

The previous prime is 25278285997. The next prime is 25278286057. The reversal of 25278286013 is 31068287252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25278286013 - 2⁴ = 25278285997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25278283013) 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 3 ways as a sum of consecutive naturals, for example, 4430381 + ... + 4436082.

It is an arithmetic number, because the mean of its divisors is an integer number (6321788832).

Almost surely, 2^25278286013 is an apocalyptic number.

It is an amenable number.

25278286013 is a deficient number, since it is larger than the sum of its proper divisors (8869315).

25278286013 is an equidigital number, since it uses as much as digits as its factorization.

25278286013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8869314.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 25278286013 in words is "twenty-five billion, two hundred seventy-eight million, two hundred eighty-six thousand, thirteen".