28050525025280 has 88 divisors (see below), whose sum is σ = 71246529064008. Its totient is φ = 10560197623808.

The previous prime is 28050525025253. The next prime is 28050525025373. The reversal of 28050525025280 is 8252052505082.

It can be written as a sum of positive squares in 4 ways, for example, as 773386571776 + 27277138453504 = 879424^2 + 5222752^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161048789 + ... + 161222868.

Almost surely, 2^{28050525025280} is an apocalyptic number.

28050525025280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28050525025280 is an abundant number, since it is smaller than the sum of its proper divisors (43196004038728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28050525025280 is a wasteful number, since it uses less digits than its factorization.

28050525025280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322271699 (or 322271681 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 44.

The spelling of 28050525025280 in words is "twenty-eight trillion, fifty billion, five hundred twenty-five million, twenty-five thousand, two hundred eighty".