19730625 has 40 divisors (see below), whose sum is σ = 34863840. Its totient is φ = 9888000.

The previous prime is 19730609. The next prime is 19730671. The reversal of 19730625 is 52603791.

It is not a de Polignac number, because 19730625 - 2⁴ = 19730609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31566 + ... + 32184.

It is an arithmetic number, because the mean of its divisors is an integer number (871596).

Almost surely, 2^19730625 is an apocalyptic number.

19730625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19730625 is a deficient number, since it is larger than the sum of its proper divisors (15133215).

19730625 is an equidigital number, since it uses as much as digits as its factorization.

19730625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 19730625 is about 4441.9168159703. The cubic root of 19730625 is about 270.2175886620.

The spelling of 19730625 in words is "nineteen million, seven hundred thirty thousand, six hundred twenty-five".