28255502554 has 4 divisors (see below), whose sum is σ = 42383253834. Its totient is φ = 14127751276.

The previous prime is 28255502543. The next prime is 28255502563. The reversal of 28255502554 is 45520555282.

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

It can be written as a sum of positive squares in only one way, i.e., 28199477329 + 56025225 = 167927^2 + 7485^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28255502554.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7063875637 + ... + 7063875640.

Almost surely, 2^28255502554 is an apocalyptic number.

28255502554 is a deficient number, since it is larger than the sum of its proper divisors (14127751280).

28255502554 is a wasteful number, since it uses less digits than its factorization.

28255502554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14127751279.

The product of its (nonzero) digits is 800000, while the sum is 43.

The spelling of 28255502554 in words is "twenty-eight billion, two hundred fifty-five million, five hundred two thousand, five hundred fifty-four".