2100351225 has 24 divisors (see below), whose sum is σ = 3968664640. Its totient is φ = 960160320.

The previous prime is 2100351223. The next prime is 2100351259. The reversal of 2100351225 is 5221530012.

It is not a de Polignac number, because 2100351225 - 2¹ = 2100351223 is a prime.

It is a super-2 number, since 2×2100351225² = 8822950536718001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2100351221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1999810 + ... + 2000859.

Almost surely, 2^2100351225 is an apocalyptic number.

2100351225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2100351225 is a deficient number, since it is larger than the sum of its proper divisors (1868313415).

2100351225 is a wasteful number, since it uses less digits than its factorization.

2100351225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000689 (or 4000684 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2100351225 is about 45829.5889682637. The cubic root of 2100351225 is about 1280.6505532962.

Adding to 2100351225 its reverse (5221530012), we get a palindrome (7321881237).

The spelling of 2100351225 in words is "two billion, one hundred million, three hundred fifty-one thousand, two hundred twenty-five".