1225601146 has 32 divisors (see below), whose sum is σ = 2294189568. Its totient is φ = 477057840.

The previous prime is 1225601131. The next prime is 1225601147. The reversal of 1225601146 is 6411065221.

It is not an unprimeable number, because it can be changed into a prime (1225601147) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 194481 + ... + 200683.

It is an arithmetic number, because the mean of its divisors is an integer number (71693424).

Almost surely, 2^1225601146 is an apocalyptic number.

1225601146 is a deficient number, since it is larger than the sum of its proper divisors (1068588422).

1225601146 is a wasteful number, since it uses less digits than its factorization.

1225601146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7506.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1225601146 is about 35008.5867466826. The cubic root of 1225601146 is about 1070.1624774377.

Adding to 1225601146 its reverse (6411065221), we get a palindrome (7636666367).

The spelling of 1225601146 in words is "one billion, two hundred twenty-five million, six hundred one thousand, one hundred forty-six".