8281910025 has 27 divisors (see below), whose sum is σ = 14836266471. Its totient is φ = 4416290640.

The previous prime is 8281910017. The next prime is 8281910033. The reversal of 8281910025 is 5200191828.

The square root of 8281910025 is 91005.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (8281910017) and next prime (8281910033).

It can be written as a sum of positive squares in only one way, i.e., 2981487609 + 5300422416 = 54603^2 + 72804^2 .

It is not a de Polignac number, because 8281910025 - 2³ = 8281910017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1362042 + ... + 1368108.

Almost surely, 2^8281910025 is an apocalyptic number.

8281910025 is the 91005-th square number.

8281910025 is the 45503-rd centered octagonal number.

It is an amenable number.

8281910025 is a deficient number, since it is larger than the sum of its proper divisors (6554356446).

8281910025 is an frugal number, since it uses more digits than its factorization.

8281910025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150 (or 6075 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The cubic root of 8281910025 is about 2023.2218318093.

Multiplying 8281910025 by its sum of digits (36), we get a square (298148760900 = 546030²).

The spelling of 8281910025 in words is "eight billion, two hundred eighty-one million, nine hundred ten thousand, twenty-five".