19768725 has 24 divisors (see below), whose sum is σ = 36317120. Its totient is φ = 10542960.

The previous prime is 19768709. The next prime is 19768747. The reversal of 19768725 is 52786791.

It is not a de Polignac number, because 19768725 - 2⁴ = 19768709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13969 + ... + 15318.

Almost surely, 2^19768725 is an apocalyptic number.

19768725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19768725 is a deficient number, since it is larger than the sum of its proper divisors (16548395).

19768725 is a wasteful number, since it uses less digits than its factorization.

19768725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29306 (or 29295 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 19768725 is about 4446.2034366412. The cubic root of 19768725 is about 270.3914076273.

It can be divided in two parts, 1976 and 8725, that added together give a palindrome (10701).

The spelling of 19768725 in words is "nineteen million, seven hundred sixty-eight thousand, seven hundred twenty-five".