2115210225 has 12 divisors (see below), whose sum is σ = 3497147696. Its totient is φ = 1128112080.

The previous prime is 2115210221. The next prime is 2115210247. The reversal of 2115210225 is 5220125112.

It is not a de Polignac number, because 2115210225 - 2² = 2115210221 is a prime.

It is a super-2 number, since 2×2115210225² = 8948228591889101250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115210221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14101327 + ... + 14101476.

Almost surely, 2^2115210225 is an apocalyptic number.

2115210225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2115210225 is a deficient number, since it is larger than the sum of its proper divisors (1381937471).

2115210225 is a wasteful number, since it uses less digits than its factorization.

2115210225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28202816 (or 28202811 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2115210225 is about 45991.4146879611. The cubic root of 2115210225 is about 1283.6634601688.

Adding to 2115210225 its reverse (5220125112), we get a palindrome (7335335337).

The spelling of 2115210225 in words is "two billion, one hundred fifteen million, two hundred ten thousand, two hundred twenty-five".