1089940625 has 24 divisors (see below), whose sum is σ = 1406409984. Its totient is φ = 843750000.

The previous prime is 1089940609. The next prime is 1089940661. The reversal of 1089940625 is 5260499801.

It is not a de Polignac number, because 1089940625 - 2⁴ = 1089940609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91250 + ... + 102500.

It is an arithmetic number, because the mean of its divisors is an integer number (58600416).

Almost surely, 2^1089940625 is an apocalyptic number.

It is an amenable number.

1089940625 is a deficient number, since it is larger than the sum of its proper divisors (316469359).

1089940625 is an frugal number, since it uses more digits than its factorization.

1089940625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11307 (or 11287 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1089940625 is about 33014.2488177453. The cubic root of 1089940625 is about 1029.1237795857.

The spelling of 1089940625 in words is "one billion, eighty-nine million, nine hundred forty thousand, six hundred twenty-five".