1225620963 has 40 divisors (see below), whose sum is σ = 2107607040. Its totient is φ = 695271600.

The previous prime is 1225620953. The next prime is 1225620989. The reversal of 1225620963 is 3690265221.

1225620963 is a `hidden beast` number, since 1 + 2 + 2 + 562 + 0 + 96 + 3 = 666.

It is not a de Polignac number, because 1225620963 - 2¹² = 1225616867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225620923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71038 + ... + 86588.

It is an arithmetic number, because the mean of its divisors is an integer number (52690176).

Almost surely, 2^1225620963 is an apocalyptic number.

1225620963 is a deficient number, since it is larger than the sum of its proper divisors (881986077).

1225620963 is a wasteful number, since it uses less digits than its factorization.

1225620963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15709 (or 15700 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1225620963 is about 35008.8697761010. The cubic root of 1225620963 is about 1070.1682452999.

The spelling of 1225620963 in words is "one billion, two hundred twenty-five million, six hundred twenty thousand, nine hundred sixty-three".