881021125 has 16 divisors (see below), whose sum is σ = 1101175920. Its totient is φ = 703752000.

The previous prime is 881021093. The next prime is 881021137. The reversal of 881021125 is 521120188.

It is a Cunningham number, because it is equal to 29682²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 763472161 + 117548964 = 27631^2 + 10842^2 .

It is not a de Polignac number, because 881021125 - 2⁵ = 881021093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881021093 and 881021102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83655 + ... + 93595.

It is an arithmetic number, because the mean of its divisors is an integer number (68823495).

Almost surely, 2^881021125 is an apocalyptic number.

It is an amenable number.

881021125 is a deficient number, since it is larger than the sum of its proper divisors (220154795).

881021125 is an equidigital number, since it uses as much as digits as its factorization.

881021125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665 (or 10655 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 881021125 is about 29682.0000168452. Note that the first 4 decimals coincide. The cubic root of 881021125 is about 958.6544825791.

The spelling of 881021125 in words is "eight hundred eighty-one million, twenty-one thousand, one hundred twenty-five".