2225215540 has 12 divisors (see below), whose sum is σ = 4672952676. Its totient is φ = 890086208.

The previous prime is 2225215529. The next prime is 2225215541. The reversal of 2225215540 is 455125222.

It can be written as a sum of positive squares in 2 ways, for example, as 795014416 + 1430201124 = 28196^2 + 37818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2225215499 and 2225215508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225215541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55630369 + ... + 55630408.

It is an arithmetic number, because the mean of its divisors is an integer number (389412723).

Almost surely, 2^2225215540 is an apocalyptic number.

2225215540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2225215540 is an abundant number, since it is smaller than the sum of its proper divisors (2447737136).

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

2225215540 is a wasteful number, since it uses less digits than its factorization.

2225215540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111260786 (or 111260784 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2225215540 is about 47172.1903243850. The cubic root of 2225215540 is about 1305.5415396540.

The spelling of 2225215540 in words is "two billion, two hundred twenty-five million, two hundred fifteen thousand, five hundred forty".