2251285608 has 128 divisors (see below), whose sum is σ = 6706022400. Its totient is φ = 620793600.

The previous prime is 2251285583. The next prime is 2251285649. The reversal of 2251285608 is 8065821522.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239053 + ... + 248291.

It is an arithmetic number, because the mean of its divisors is an integer number (52390800).

Almost surely, 2^2251285608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251285608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353011200).

2251285608 is an abundant number, since it is smaller than the sum of its proper divisors (4454736792).

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

2251285608 is a wasteful number, since it uses less digits than its factorization.

2251285608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343 (or 9339 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 2251285608 is about 47447.7144655040. The cubic root of 2251285608 is about 1310.6202233710.

The spelling of 2251285608 in words is "two billion, two hundred fifty-one million, two hundred eighty-five thousand, six hundred eight".