280003528025 has 24 divisors (see below), whose sum is σ = 373940232960. Its totient is φ = 206756447040.

The previous prime is 280003528009. The next prime is 280003528033. The reversal of 280003528025 is 520825300082.

It is not a de Polignac number, because 280003528025 - 2⁴ = 280003528009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6205496 + ... + 6250454.

It is an arithmetic number, because the mean of its divisors is an integer number (15580843040).

Almost surely, 2^280003528025 is an apocalyptic number.

280003528025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280003528025 is a deficient number, since it is larger than the sum of its proper divisors (93936704935).

280003528025 is a wasteful number, since it uses less digits than its factorization.

280003528025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64145 (or 64140 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 280003528025 in words is "two hundred eighty billion, three million, five hundred twenty-eight thousand, twenty-five".