2031512225 has 12 divisors (see below), whose sum is σ = 2545048044. Its totient is φ = 1608453120.

The previous prime is 2031512213. The next prime is 2031512227. The reversal of 2031512225 is 5222151302.

It can be written as a sum of positive squares in 6 ways, for example, as 32706961 + 1998805264 = 5719^2 + 44708^2 .

It is not a de Polignac number, because 2031512225 - 2⁸ = 2031511969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031512225.

It is not an unprimeable number, because it can be changed into a prime (2031512227) 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, 416444 + ... + 421293.

It is an arithmetic number, because the mean of its divisors is an integer number (212087337).

Almost surely, 2^2031512225 is an apocalyptic number.

2031512225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2031512225 is a deficient number, since it is larger than the sum of its proper divisors (513535819).

2031512225 is an equidigital number, since it uses as much as digits as its factorization.

2031512225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837844 (or 837839 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2031512225 is about 45072.2999745964. The cubic root of 2031512225 is about 1266.5037500148.

Adding to 2031512225 its reverse (5222151302), we get a palindrome (7253663527).

The spelling of 2031512225 in words is "two billion, thirty-one million, five hundred twelve thousand, two hundred twenty-five".