1225650123616 has 24 divisors (see below), whose sum is σ = 2413425437640. Its totient is φ = 612716679168.

The previous prime is 1225650123611. The next prime is 1225650123637. The reversal of 1225650123616 is 6163210565221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225650123611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3203041 + ... + 3565216.

It is an arithmetic number, because the mean of its divisors is an integer number (100559393235).

Almost surely, 2^{1225650123616} is an apocalyptic number.

1225650123616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1225650123616 is a deficient number, since it is larger than the sum of its proper divisors (1187775314024).

1225650123616 is an equidigital number, since it uses as much as digits as its factorization.

1225650123616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773926 (or 6773918 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 1225650123616 its reverse (6163210565221), we get a palindrome (7388860688837).

The spelling of 1225650123616 in words is "one trillion, two hundred twenty-five billion, six hundred fifty million, one hundred twenty-three thousand, six hundred sixteen".