19940925 has 24 divisors (see below), whose sum is σ = 33676416. Its totient is φ = 10407040.

The previous prime is 19940911. The next prime is 19940927. The reversal of 19940925 is 52904991.

It is not a de Polignac number, because 19940925 - 2⁷ = 19940797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940927) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 697 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (1403184).

Almost surely, 2^19940925 is an apocalyptic number.

19940925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19940925 is a deficient number, since it is larger than the sum of its proper divisors (13735491).

19940925 is a wasteful number, since it uses less digits than its factorization.

19940925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717 (or 5712 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 19940925 is about 4465.5262847732. The cubic root of 19940925 is about 271.1742410555.

The spelling of 19940925 in words is "nineteen million, nine hundred forty thousand, nine hundred twenty-five".