2351220225 has 24 divisors (see below), whose sum is σ = 3912130560. Its totient is φ = 1245990720.

The previous prime is 2351220217. The next prime is 2351220229. The reversal of 2351220225 is 5220221532.

It is not a de Polignac number, because 2351220225 - 2³ = 2351220217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2351220195 and 2351220204.

It is not an unprimeable number, because it can be changed into a prime (2351220229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88065 + ... + 111614.

It is an arithmetic number, because the mean of its divisors is an integer number (163005440).

Almost surely, 2^2351220225 is an apocalyptic number.

2351220225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2351220225 is a deficient number, since it is larger than the sum of its proper divisors (1560910335).

2351220225 is a wasteful number, since it uses less digits than its factorization.

2351220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199849 (or 199844 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2351220225 is about 48489.3826007302. The cubic root of 2351220225 is about 1329.7329678534.

Adding to 2351220225 its reverse (5220221532), we get a palindrome (7571441757).

The spelling of 2351220225 in words is "two billion, three hundred fifty-one million, two hundred twenty thousand, two hundred twenty-five".