1225534236 has 24 divisors (see below), whose sum is σ = 2866794000. Its totient is φ = 407480832.

The previous prime is 1225534223. The next prime is 1225534241. The reversal of 1225534236 is 6324355221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1225534197 and 1225534206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123861 + ... + 133388.

It is an arithmetic number, because the mean of its divisors is an integer number (119449750).

Almost surely, 2^1225534236 is an apocalyptic number.

It is an amenable number.

1225534236 is an abundant number, since it is smaller than the sum of its proper divisors (1641259764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225534236 is a wasteful number, since it uses less digits than its factorization.

1225534236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257653 (or 257651 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 1225534236 is about 35007.6311109449. The cubic root of 1225534236 is about 1070.1430024030.

Adding to 1225534236 its reverse (6324355221), we get a palindrome (7549889457).

The spelling of 1225534236 in words is "one billion, two hundred twenty-five million, five hundred thirty-four thousand, two hundred thirty-six".