1225225036 has 12 divisors (see below), whose sum is σ = 2450450128. Its totient is φ = 525096432.

The previous prime is 1225225021. The next prime is 1225225049. The reversal of 1225225036 is 6305225221.

1225225036 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 43758037 = 1225225036 / (1 + 2 + 2 + 5 + 2 + 2 + 5 + 0 + 3 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 1225224995 and 1225225013.

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, 21878991 + ... + 21879046.

Almost surely, 2^1225225036 is an apocalyptic number.

It is an amenable number.

1225225036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1225225036 is a wasteful number, since it uses less digits than its factorization.

1225225036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43758048 (or 43758046 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1225225036 is about 35003.2146523716. The cubic root of 1225225036 is about 1070.0529964725.

The spelling of 1225225036 in words is "one billion, two hundred twenty-five million, two hundred twenty-five thousand, thirty-six".