19081225 has 36 divisors (see below), whose sum is σ = 26647600. Its totient is φ = 13512960.

The previous prime is 19081211. The next prime is 19081241. The reversal of 19081225 is 52218091.

It is not a de Polignac number, because 19081225 - 2⁵ = 19081193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19081193 and 19081202.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 137206 + ... + 137344.

Almost surely, 2^19081225 is an apocalyptic number.

It is an amenable number.

19081225 is a deficient number, since it is larger than the sum of its proper divisors (7566375).

19081225 is a wasteful number, since it uses less digits than its factorization.

19081225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 19081225 is about 4368.2061535601. The cubic root of 19081225 is about 267.2198715381.

It can be divided in two parts, 19081 and 225, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 19081225 in words is "nineteen million, eighty-one thousand, two hundred twenty-five".