28895025391 has 2 divisors, whose sum is σ = 28895025392. Its totient is φ = 28895025390.

The previous prime is 28895025349. The next prime is 28895025407. The reversal of 28895025391 is 19352059882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28895025391 - 2²⁵ = 28861470959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28895025091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14447512695 + 14447512696.

It is an arithmetic number, because the mean of its divisors is an integer number (14447512696).

Almost surely, 2^28895025391 is an apocalyptic number.

28895025391 is a deficient number, since it is larger than the sum of its proper divisors (1).

28895025391 is an equidigital number, since it uses as much as digits as its factorization.

28895025391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 28895025391 in words is "twenty-eight billion, eight hundred ninety-five million, twenty-five thousand, three hundred ninety-one".