1000135225 has 6 divisors (see below), whose sum is σ = 1240167710. Its totient is φ = 800108160.

The previous prime is 1000135217. The next prime is 1000135261. The reversal of 1000135225 is 5225310001.

It can be written as a sum of positive squares in 3 ways, for example, as 250525584 + 749609641 = 15828^2 + 27379^2 .

It is not a de Polignac number, because 1000135225 - 2³ = 1000135217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20002680 + ... + 20002729.

Almost surely, 2^1000135225 is an apocalyptic number.

It is an amenable number.

1000135225 is a deficient number, since it is larger than the sum of its proper divisors (240032485).

1000135225 is an equidigital number, since it uses as much as digits as its factorization.

1000135225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40005419 (or 40005414 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1000135225 is about 31624.9146243907. The cubic root of 1000135225 is about 1000.0450729684.

Adding to 1000135225 its reverse (5225310001), we get a palindrome (6225445226).

The spelling of 1000135225 in words is "one billion, one hundred thirty-five thousand, two hundred twenty-five".