19390225 has 12 divisors (see below), whose sum is σ = 24106096. Its totient is φ = 15472080.

The previous prime is 19390223. The next prime is 19390237. The reversal of 19390225 is 52209391.

It is not a de Polignac number, because 19390225 - 2¹ = 19390223 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19390223) 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, 12334 + ... + 13816.

Almost surely, 2^19390225 is an apocalyptic number.

It is an amenable number.

19390225 is a deficient number, since it is larger than the sum of its proper divisors (4715871).

19390225 is a wasteful number, since it uses less digits than its factorization.

19390225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 19390225 is about 4403.4333195814. The cubic root of 19390225 is about 268.6546010778.

The spelling of 19390225 in words is "nineteen million, three hundred ninety thousand, two hundred twenty-five".