1011512225 has 24 divisors (see below), whose sum is σ = 1278831840. Its totient is φ = 793440000.

The previous prime is 1011512213. The next prime is 1011512231. The reversal of 1011512225 is 5222151101.

1011512225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011512225 - 2¹⁴ = 1011495841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011512197 and 1011512206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841625 + ... + 842825.

It is an arithmetic number, because the mean of its divisors is an integer number (53284660).

Almost surely, 2^1011512225 is an apocalyptic number.

It is an amenable number.

1011512225 is a deficient number, since it is larger than the sum of its proper divisors (267319615).

1011512225 is a wasteful number, since it uses less digits than its factorization.

1011512225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1011512225 is about 31804.2799792732. The cubic root of 1011512225 is about 1003.8227760947.

Adding to 1011512225 its reverse (5222151101), we get a palindrome (6233663326).

The spelling of 1011512225 in words is "one billion, eleven million, five hundred twelve thousand, two hundred twenty-five".