1089607625 has 8 divisors (see below), whose sum is σ = 1359830472. Its totient is φ = 871686000.

The previous prime is 1089607621. The next prime is 1089607637. The reversal of 1089607625 is 5267069801.

It can be written as a sum of positive squares in 4 ways, for example, as 307230784 + 782376841 = 17528^2 + 27971^2 .

It is not a de Polignac number, because 1089607625 - 2² = 1089607621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089607621) 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, 4358306 + ... + 4358555.

It is an arithmetic number, because the mean of its divisors is an integer number (169978809).

Almost surely, 2^1089607625 is an apocalyptic number.

It is an amenable number.

1089607625 is a deficient number, since it is larger than the sum of its proper divisors (270222847).

1089607625 is an frugal number, since it uses more digits than its factorization.

1089607625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716876 (or 8716866 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1089607625 is about 33009.2051555320. The cubic root of 1089607625 is about 1029.0189625229.

The spelling of 1089607625 in words is "one billion, eighty-nine million, six hundred seven thousand, six hundred twenty-five".