19225489 has 2 divisors, whose sum is σ = 19225490. Its totient is φ = 19225488.

The previous prime is 19225483. The next prime is 19225501. The reversal of 19225489 is 98452291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 1459264 = 4215^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 19225489 - 2⁵ = 19225457 is a prime.

It is not a weakly prime, because it can be changed into another prime (19225483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9612744 + 9612745.

It is an arithmetic number, because the mean of its divisors is an integer number (9612745).

Almost surely, 2^19225489 is an apocalyptic number.

It is an amenable number.

19225489 is a deficient number, since it is larger than the sum of its proper divisors (1).

19225489 is an equidigital number, since it uses as much as digits as its factorization.

19225489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 19225489 is about 4384.6880162675. The cubic root of 19225489 is about 267.8916219167.

The spelling of 19225489 in words is "nineteen million, two hundred twenty-five thousand, four hundred eighty-nine".