25628889134 has 8 divisors (see below), whose sum is σ = 38673533808. Its totient is φ = 12737711200.

The previous prime is 25628889133. The next prime is 25628889161. The reversal of 25628889134 is 43198882652.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25628889134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628889133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38366267 + ... + 38366934.

It is an arithmetic number, because the mean of its divisors is an integer number (4834191726).

Almost surely, 2^25628889134 is an apocalyptic number.

25628889134 is a deficient number, since it is larger than the sum of its proper divisors (13044644674).

25628889134 is a wasteful number, since it uses less digits than its factorization.

25628889134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76733370.

The product of its digits is 6635520, while the sum is 56.

The spelling of 25628889134 in words is "twenty-five billion, six hundred twenty-eight million, eight hundred eighty-nine thousand, one hundred thirty-four".