881121625 has 8 divisors (see below), whose sum is σ = 1099639944. Its totient is φ = 704897200.

The previous prime is 881121617. The next prime is 881121629. The reversal of 881121625 is 526121188.

It can be written as a sum of positive squares in 4 ways, for example, as 107391769 + 773729856 = 10363^2 + 27816^2 .

It is not a de Polignac number, because 881121625 - 2³ = 881121617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881121629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524362 + ... + 3524611.

It is an arithmetic number, because the mean of its divisors is an integer number (137454993).

Almost surely, 2^881121625 is an apocalyptic number.

It is an amenable number.

881121625 is a deficient number, since it is larger than the sum of its proper divisors (218518319).

881121625 is an equidigital number, since it uses as much as digits as its factorization.

881121625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048988 (or 7048978 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 881121625 is about 29683.6929137869. The cubic root of 881121625 is about 958.6909331285.

The spelling of 881121625 in words is "eight hundred eighty-one million, one hundred twenty-one thousand, six hundred twenty-five".