19725012 has 24 divisors (see below), whose sum is σ = 51139200. Its totient is φ = 6574968.

The previous prime is 19725011. The next prime is 19725029. The reversal of 19725012 is 21052791.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19725011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91212 + ... + 91427.

It is an arithmetic number, because the mean of its divisors is an integer number (2130800).

Almost surely, 2^19725012 is an apocalyptic number.

19725012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19725012 is an abundant number, since it is smaller than the sum of its proper divisors (31414188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19725012 is a wasteful number, since it uses less digits than its factorization.

19725012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182652 (or 182644 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 19725012 is about 4441.2849492011. The cubic root of 19725012 is about 270.1919622534.

The spelling of 19725012 in words is "nineteen million, seven hundred twenty-five thousand, twelve".