1012355225 has 24 divisors (see below), whose sum is σ = 1439068608. Its totient is φ = 692049600.

The previous prime is 1012355221. The next prime is 1012355243. The reversal of 1012355225 is 5225532101.

1012355225 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 1012355225 - 2² = 1012355221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012355194 and 1012355203.

It is not an unprimeable number, because it can be changed into a prime (1012355221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49187 + ... + 66663.

It is an arithmetic number, because the mean of its divisors is an integer number (59961192).

Almost surely, 2^1012355225 is an apocalyptic number.

It is an amenable number.

1012355225 is a deficient number, since it is larger than the sum of its proper divisors (426713383).

1012355225 is a wasteful number, since it uses less digits than its factorization.

1012355225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17825 (or 17820 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1012355225 is about 31817.5301524176. The cubic root of 1012355225 is about 1004.1015625183.

Adding to 1012355225 its reverse (5225532101), we get a palindrome (6237887326).

The spelling of 1012355225 in words is "one billion, twelve million, three hundred fifty-five thousand, two hundred twenty-five".