1012151225 has 24 divisors (see below), whose sum is σ = 1315040832. Its totient is φ = 771320000.

The previous prime is 1012151207. The next prime is 1012151237. The reversal of 1012151225 is 5221512101.

It is not a de Polignac number, because 1012151225 - 2¹⁰ = 1012150201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012151197 and 1012151206.

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, 140819 + ... + 147831.

It is an arithmetic number, because the mean of its divisors is an integer number (54793368).

Almost surely, 2^1012151225 is an apocalyptic number.

It is an amenable number.

1012151225 is a deficient number, since it is larger than the sum of its proper divisors (302889607).

1012151225 is a wasteful number, since it uses less digits than its factorization.

1012151225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297 (or 7292 counting only the distinct ones).

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

The square root of 1012151225 is about 31814.3242109588. The cubic root of 1012151225 is about 1004.0341123868.

Adding to 1012151225 its reverse (5221512101), we get a palindrome (6233663326).

The spelling of 1012151225 in words is "one billion, twelve million, one hundred fifty-one thousand, two hundred twenty-five".