8281275025 has 12 divisors (see below), whose sum is σ = 10872827532. Its totient is φ = 6235312640.

The previous prime is 8281275019. The next prime is 8281275029. The reversal of 8281275025 is 5205721828.

It can be written as a sum of positive squares in 6 ways, for example, as 907274641 + 7374000384 = 30121^2 + 85872^2 .

It is not a de Polignac number, because 8281275025 - 2⁹ = 8281274513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8281275029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9742252 + ... + 9743101.

It is an arithmetic number, because the mean of its divisors is an integer number (906068961).

Almost surely, 2^8281275025 is an apocalyptic number.

8281275025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8281275025 is a deficient number, since it is larger than the sum of its proper divisors (2591552507).

8281275025 is a wasteful number, since it uses less digits than its factorization.

8281275025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19485380 (or 19485375 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 8281275025 is about 91001.5111138271. The cubic root of 8281275025 is about 2023.1701215679.

The spelling of 8281275025 in words is "eight billion, two hundred eighty-one million, two hundred seventy-five thousand, twenty-five".