1225698320 has 80 divisors (see below), whose sum is σ = 3552951168. Its totient is φ = 382033920.

The previous prime is 1225698307. The next prime is 1225698349. The reversal of 1225698320 is 238965221.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93329 + ... + 105648.

Almost surely, 2^1225698320 is an apocalyptic number.

1225698320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225698320 is an abundant number, since it is smaller than the sum of its proper divisors (2327252848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225698320 is a wasteful number, since it uses less digits than its factorization.

1225698320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199008 (or 199002 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1225698320 is about 35009.9745786826. The cubic root of 1225698320 is about 1070.1907599450.

The spelling of 1225698320 in words is "one billion, two hundred twenty-five million, six hundred ninety-eight thousand, three hundred twenty".