881721825 has 12 divisors (see below), whose sum is σ = 1457780208. Its totient is φ = 470251600.

The previous prime is 881721823. The next prime is 881721839. The reversal of 881721825 is 528127188.

It is not a de Polignac number, because 881721825 - 2¹ = 881721823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (881721823) 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, 5878071 + ... + 5878220.

It is an arithmetic number, because the mean of its divisors is an integer number (121481684).

Almost surely, 2^881721825 is an apocalyptic number.

It is an amenable number.

881721825 is a deficient number, since it is larger than the sum of its proper divisors (576058383).

881721825 is a wasteful number, since it uses less digits than its factorization.

881721825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756304 (or 11756299 counting only the distinct ones).

The product of its digits is 71680, while the sum is 42.

The square root of 881721825 is about 29693.8011207727. The cubic root of 881721825 is about 958.9085632036.

The spelling of 881721825 in words is "eight hundred eighty-one million, seven hundred twenty-one thousand, eight hundred twenty-five".