1997268225 has 12 divisors (see below), whose sum is σ = 3302150256. Its totient is φ = 1065209680.

The previous prime is 1997268197. The next prime is 1997268253. The reversal of 1997268225 is 5228627991.

It is an interprime number because it is at equal distance from previous prime (1997268197) and next prime (1997268253).

It is not a de Polignac number, because 1997268225 - 2¹⁹ = 1996743937 is a prime.

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, 13315047 + ... + 13315196.

It is an arithmetic number, because the mean of its divisors is an integer number (275179188).

Almost surely, 2^1997268225 is an apocalyptic number.

1997268225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1997268225 is a deficient number, since it is larger than the sum of its proper divisors (1304882031).

1997268225 is a wasteful number, since it uses less digits than its factorization.

1997268225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26630256 (or 26630251 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 1997268225 is about 44690.8069405778. The cubic root of 1997268225 is about 1259.3471517177.

The spelling of 1997268225 in words is "one billion, nine hundred ninety-seven million, two hundred sixty-eight thousand, two hundred twenty-five".