1915224225 has 24 divisors (see below), whose sum is σ = 3333164640. Its totient is φ = 967691520.

The previous prime is 1915224209. The next prime is 1915224239. The reversal of 1915224225 is 5224225191.

It is not a de Polignac number, because 1915224225 - 2⁴ = 1915224209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 670584 + ... + 673433.

It is an arithmetic number, because the mean of its divisors is an integer number (138881860).

Almost surely, 2^1915224225 is an apocalyptic number.

1915224225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1915224225 is a deficient number, since it is larger than the sum of its proper divisors (1417940415).

1915224225 is a wasteful number, since it uses less digits than its factorization.

1915224225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344049 (or 1344044 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 1915224225 is about 43763.2748431833. The cubic root of 1915224225 is about 1241.8616298716.

The spelling of 1915224225 in words is "one billion, nine hundred fifteen million, two hundred twenty-four thousand, two hundred twenty-five".