19425012 has 24 divisors (see below), whose sum is σ = 46888800. Its totient is φ = 6251616.

The previous prime is 19425001. The next prime is 19425013. The reversal of 19425012 is 21052491.

Added to its reverse (21052491) it gives a triangular number (40477503 = T₈₉₉₇).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19425013) 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, 27562 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (1953700).

Almost surely, 2^19425012 is an apocalyptic number.

19425012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19425012 is an abundant number, since it is smaller than the sum of its proper divisors (27463788).

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

19425012 is a wasteful number, since it uses less digits than its factorization.

19425012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55855 (or 55853 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 19425012 is about 4407.3815355605. The cubic root of 19425012 is about 268.8151648722.

Adding to 19425012 its reverse (21052491), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 19425012 in words is "nineteen million, four hundred twenty-five thousand, twelve".