28000227525 has 24 divisors (see below), whose sum is σ = 46302807264. Its totient is φ = 14930520000.

The previous prime is 28000227517. The next prime is 28000227533. The reversal of 28000227525 is 52572200082.

It is an interprime number because it is at equal distance from previous prime (28000227517) and next prime (28000227533).

It is not a de Polignac number, because 28000227525 - 2³ = 28000227517 is a prime.

It is a congruent number.

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, 378642 + ... + 446508.

It is an arithmetic number, because the mean of its divisors is an integer number (1929283636).

Almost surely, 2^28000227525 is an apocalyptic number.

28000227525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28000227525 is a deficient number, since it is larger than the sum of its proper divisors (18302579739).

28000227525 is a wasteful number, since it uses less digits than its factorization.

28000227525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73381 (or 73376 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The spelling of 28000227525 in words is "twenty-eight billion, two hundred twenty-seven thousand, five hundred twenty-five".