19976225 has 12 divisors (see below), whose sum is σ = 25375980. Its totient is φ = 15590400.

The previous prime is 19976179. The next prime is 19976237. The reversal of 19976225 is 52267991.

It can be written as a sum of positive squares in 6 ways, for example, as 9296401 + 10679824 = 3049^2 + 3268^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19976225 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8720 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (2114665).

Almost surely, 2^19976225 is an apocalyptic number.

It is an amenable number.

19976225 is a deficient number, since it is larger than the sum of its proper divisors (5399755).

19976225 is a wasteful number, since it uses less digits than its factorization.

19976225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19540 (or 19535 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 19976225 is about 4469.4770387597. The cubic root of 19976225 is about 271.3341602131.

The spelling of 19976225 in words is "nineteen million, nine hundred seventy-six thousand, two hundred twenty-five".