2250065640 has 32 divisors (see below), whose sum is σ = 6750197280. Its totient is φ = 600017472.

The previous prime is 2250065611. The next prime is 2250065663. The reversal of 2250065640 is 465600522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2250065598 and 2250065607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9375154 + ... + 9375393.

It is an arithmetic number, because the mean of its divisors is an integer number (210943665).

Almost surely, 2^2250065640 is an apocalyptic number.

2250065640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2250065640 is an abundant number, since it is smaller than the sum of its proper divisors (4500131640).

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

2250065640 is a wasteful number, since it uses less digits than its factorization.

2250065640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18750561 (or 18750557 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2250065640 is about 47434.8568038315. The cubic root of 2250065640 is about 1310.3834396076.

The spelling of 2250065640 in words is "two billion, two hundred fifty million, sixty-five thousand, six hundred forty".