1225120641 has 8 divisors (see below), whose sum is σ = 1634385984. Its totient is φ = 816301200.

The previous prime is 1225120639. The next prime is 1225120643. The reversal of 1225120641 is 1460215221.

It is an interprime number because it is at equal distance from previous prime (1225120639) and next prime (1225120643).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225120641 - 2¹ = 1225120639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225120643) 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 7 ways as a sum of consecutive naturals, for example, 105010 + ... + 116091.

It is an arithmetic number, because the mean of its divisors is an integer number (204298248).

Almost surely, 2^1225120641 is an apocalyptic number.

It is an amenable number.

1225120641 is a deficient number, since it is larger than the sum of its proper divisors (409265343).

1225120641 is a wasteful number, since it uses less digits than its factorization.

1225120641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222951.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1225120641 is about 35001.7234004270. The cubic root of 1225120641 is about 1070.0226044079.

Adding to 1225120641 its reverse (1460215221), we get a palindrome (2685335862).

The spelling of 1225120641 in words is "one billion, two hundred twenty-five million, one hundred twenty thousand, six hundred forty-one".