1225613980 has 24 divisors (see below), whose sum is σ = 2725189488. Its totient is φ = 461407488.

The previous prime is 1225613969. The next prime is 1225614001. The reversal of 1225613980 is 893165221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802034 + ... + 1802713.

It is an arithmetic number, because the mean of its divisors is an integer number (113549562).

Almost surely, 2^1225613980 is an apocalyptic number.

1225613980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225613980 is an abundant number, since it is smaller than the sum of its proper divisors (1499575508).

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

1225613980 is a wasteful number, since it uses less digits than its factorization.

1225613980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604773 (or 3604771 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1225613980 is about 35008.7700440904. The cubic root of 1225613980 is about 1070.1662128610.

The spelling of 1225613980 in words is "one billion, two hundred twenty-five million, six hundred thirteen thousand, nine hundred eighty".