1220523440325 has 96 divisors (see below), whose sum is σ = 2328917606400. Its totient is φ = 552480549120.

The previous prime is 1220523440273. The next prime is 1220523440327. The reversal of 1220523440325 is 5230443250221.

It is not a de Polignac number, because 1220523440325 - 2¹⁵ = 1220523407557 is a prime.

It is a super-2 number, since 2×1220523440325² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220523440327) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27927591 + ... + 27971259.

It is an arithmetic number, because the mean of its divisors is an integer number (24259558400).

Almost surely, 2^{1220523440325} is an apocalyptic number.

1220523440325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220523440325 is a deficient number, since it is larger than the sum of its proper divisors (1108394166075).

1220523440325 is a wasteful number, since it uses less digits than its factorization.

1220523440325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44211 (or 44206 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 1220523440325 its reverse (5230443250221), we get a palindrome (6450966690546).

The spelling of 1220523440325 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, four hundred forty thousand, three hundred twenty-five".