1225967836 has 6 divisors (see below), whose sum is σ = 2145443720. Its totient is φ = 612983916.

The previous prime is 1225967789. The next prime is 1225967891. The reversal of 1225967836 is 6387695221.

It is a self number, because there is not a number n which added to its sum of digits gives 1225967836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153245976 + ... + 153245983.

Almost surely, 2^1225967836 is an apocalyptic number.

It is an amenable number.

1225967836 is a deficient number, since it is larger than the sum of its proper divisors (919475884).

1225967836 is a wasteful number, since it uses less digits than its factorization.

1225967836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306491963 (or 306491961 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 1225967836 is about 35013.8234987269. The cubic root of 1225967836 is about 1070.2691947958.

The spelling of 1225967836 in words is "one billion, two hundred twenty-five million, nine hundred sixty-seven thousand, eight hundred thirty-six".