1222023501525 has 24 divisors (see below), whose sum is σ = 2020976836704. Its totient is φ = 651563723200.

The previous prime is 1222023501509. The next prime is 1222023501529. The reversal of 1222023501525 is 5251053202221.

It is not a de Polignac number, because 1222023501525 - 2⁴ = 1222023501509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222023501492 and 1222023501501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222023501529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2006439 + ... + 2543588.

It is an arithmetic number, because the mean of its divisors is an integer number (84207368196).

Almost surely, 2^{1222023501525} is an apocalyptic number.

1222023501525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222023501525 is a deficient number, since it is larger than the sum of its proper divisors (798953335179).

1222023501525 is a wasteful number, since it uses less digits than its factorization.

1222023501525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553621 (or 4553616 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1222023501525 its reverse (5251053202221), we get a palindrome (6473076703746).

The spelling of 1222023501525 in words is "one trillion, two hundred twenty-two billion, twenty-three million, five hundred one thousand, five hundred twenty-five".