1225161634 has 8 divisors (see below), whose sum is σ = 1852213248. Its totient is φ = 607757220.

The previous prime is 1225161577. The next prime is 1225161647. The reversal of 1225161634 is 4361615221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1225161596 and 1225161605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411482 + ... + 2411989.

It is an arithmetic number, because the mean of its divisors is an integer number (231526656).

Almost surely, 2^1225161634 is an apocalyptic number.

1225161634 is a deficient number, since it is larger than the sum of its proper divisors (627051614).

1225161634 is a wasteful number, since it uses less digits than its factorization.

1225161634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823600.

The product of its digits is 8640, while the sum is 31.

The square root of 1225161634 is about 35002.3089809801. The cubic root of 1225161634 is about 1070.0345387285.

Adding to 1225161634 its reverse (4361615221), we get a palindrome (5586776855).

The spelling of 1225161634 in words is "one billion, two hundred twenty-five million, one hundred sixty-one thousand, six hundred thirty-four".