1225959284 has 24 divisors (see below), whose sum is σ = 2478143808. Its totient is φ = 524474240.

The previous prime is 1225959281. The next prime is 1225959307. The reversal of 1225959284 is 4829595221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225959281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818744 + ... + 820239.

It is an arithmetic number, because the mean of its divisors is an integer number (103255992).

Almost surely, 2^1225959284 is an apocalyptic number.

It is an amenable number.

1225959284 is an abundant number, since it is smaller than the sum of its proper divisors (1252184524).

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

1225959284 is a wasteful number, since it uses less digits than its factorization.

1225959284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639015 (or 1639013 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 1225959284 is about 35013.7013753188. The cubic root of 1225959284 is about 1070.2667061597.

The spelling of 1225959284 in words is "one billion, two hundred twenty-five million, nine hundred fifty-nine thousand, two hundred eighty-four".