19748725 has 12 divisors (see below), whose sum is σ = 24621316. Its totient is φ = 15713280.

The previous prime is 19748723. The next prime is 19748737. The reversal of 19748725 is 52784791.

It can be written as a sum of positive squares in 6 ways, for example, as 1957201 + 17791524 = 1399^2 + 4218^2 .

It is not a de Polignac number, because 19748725 - 2¹ = 19748723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19748723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2779 + ... + 6871.

Almost surely, 2^19748725 is an apocalyptic number.

It is an amenable number.

19748725 is a deficient number, since it is larger than the sum of its proper divisors (4872591).

19748725 is a wasteful number, since it uses less digits than its factorization.

19748725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4291 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 19748725 is about 4443.9537576352. The cubic root of 19748725 is about 270.3001919508.

The spelling of 19748725 in words is "nineteen million, seven hundred forty-eight thousand, seven hundred twenty-five".