19481725 has 12 divisors (see below), whose sum is σ = 24257376. Its totient is φ = 15520880.

The previous prime is 19481699. The next prime is 19481731. The reversal of 19481725 is 52718491.

It is not a de Polignac number, because 19481725 - 2¹⁹ = 18957437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5094 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (2021448).

Almost surely, 2^19481725 is an apocalyptic number.

It is an amenable number.

19481725 is a deficient number, since it is larger than the sum of its proper divisors (4775651).

19481725 is a wasteful number, since it uses less digits than its factorization.

19481725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3231 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 19481725 is about 4413.8107118453. The cubic root of 19481725 is about 269.0765203828.

The spelling of 19481725 in words is "nineteen million, four hundred eighty-one thousand, seven hundred twenty-five".