2256140225 has 6 divisors (see below), whose sum is σ = 2797613910. Its totient is φ = 1804912160.

The previous prime is 2256140221. The next prime is 2256140239. The reversal of 2256140225 is 5220416522.

It can be written as a sum of positive squares in 3 ways, for example, as 4068289 + 2252071936 = 2017^2 + 47456^2 .

It is not a de Polignac number, because 2256140225 - 2² = 2256140221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2256140221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45122780 + ... + 45122829.

It is an arithmetic number, because the mean of its divisors is an integer number (466268985).

Almost surely, 2^2256140225 is an apocalyptic number.

2256140225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2256140225 is a deficient number, since it is larger than the sum of its proper divisors (541473685).

2256140225 is an equidigital number, since it uses as much as digits as its factorization.

2256140225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90245619 (or 90245614 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2256140225 is about 47498.8444596287. The cubic root of 2256140225 is about 1311.5616101220.

Adding to 2256140225 its reverse (5220416522), we get a palindrome (7476556747).

The spelling of 2256140225 in words is "two billion, two hundred fifty-six million, one hundred forty thousand, two hundred twenty-five".