109609025 has 24 divisors (see below), whose sum is σ = 141133824. Its totient is φ = 84355200.

The previous prime is 109608991. The next prime is 109609033. The reversal of 109609025 is 520906901.

It is not a de Polignac number, because 109609025 - 2¹⁰ = 109608001 is a prime.

It is a super-2 number, since 2×109609025² = 24028276722901250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109608982 and 109609000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180272 + ... + 180878.

It is an arithmetic number, because the mean of its divisors is an integer number (5880576).

Almost surely, 2^109609025 is an apocalyptic number.

It is an amenable number.

109609025 is a deficient number, since it is larger than the sum of its proper divisors (31524799).

109609025 is a wasteful number, since it uses less digits than its factorization.

109609025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 109609025 is about 10469.4328881750. The cubic root of 109609025 is about 478.5736374528.

The spelling of 109609025 in words is "one hundred nine million, six hundred nine thousand, twenty-five".