2511512225 has 12 divisors (see below), whose sum is σ = 3114919680. Its totient is φ = 2008794000.

The previous prime is 2511512173. The next prime is 2511512231. The reversal of 2511512225 is 5222151152.

It is a happy number.

It is not a de Polignac number, because 2511512225 - 2⁶ = 2511512161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2511512194 and 2511512203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184400 + ... + 197550.

It is an arithmetic number, because the mean of its divisors is an integer number (259576640).

Almost surely, 2^2511512225 is an apocalyptic number.

2511512225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2511512225 is a deficient number, since it is larger than the sum of its proper divisors (603407455).

2511512225 is a wasteful number, since it uses less digits than its factorization.

2511512225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800 (or 20795 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 2511512225 is about 50114.9900229462. The cubic root of 2511512225 is about 1359.2888844730.

Adding to 2511512225 its reverse (5222151152), we get a palindrome (7733663377).

The spelling of 2511512225 in words is "two billion, five hundred eleven million, five hundred twelve thousand, two hundred twenty-five".