1001225135 has 16 divisors (see below), whose sum is σ = 1246690560. Its totient is φ = 771102720.

The previous prime is 1001225119. The next prime is 1001225171. The reversal of 1001225135 is 5315221001.

It is a happy number.

It is not a de Polignac number, because 1001225135 - 2⁴ = 1001225119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13181 + ... + 46649.

It is an arithmetic number, because the mean of its divisors is an integer number (77918160).

Almost surely, 2^1001225135 is an apocalyptic number.

1001225135 is a deficient number, since it is larger than the sum of its proper divisors (245465425).

1001225135 is a wasteful number, since it uses less digits than its factorization.

1001225135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33698.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1001225135 is about 31642.1417574727. The cubic root of 1001225135 is about 1000.4082116739.

Adding to 1001225135 its reverse (5315221001), we get a palindrome (6316446136).

The spelling of 1001225135 in words is "one billion, one million, two hundred twenty-five thousand, one hundred thirty-five".