109625405 has 12 divisors (see below), whose sum is σ = 132462876. Its totient is φ = 87096000.

The previous prime is 109625387. The next prime is 109625419. The reversal of 109625405 is 504526901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67453369 + 42172036 = 8213^2 + 6494^2 .

It is not a de Polignac number, because 109625405 - 2¹⁶ = 109559869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182105 + ... + 182705.

It is an arithmetic number, because the mean of its divisors is an integer number (11038573).

Almost surely, 2^109625405 is an apocalyptic number.

It is an amenable number.

109625405 is a deficient number, since it is larger than the sum of its proper divisors (22837471).

109625405 is an frugal number, since it uses more digits than its factorization.

109625405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 109625405 is about 10470.2151362806. The cubic root of 109625405 is about 478.5974756533.

The spelling of 109625405 in words is "one hundred nine million, six hundred twenty-five thousand, four hundred five".