1002223031525 has 6 divisors (see below), whose sum is σ = 1242756559122. Its totient is φ = 801778425200.

The previous prime is 1002223031521. The next prime is 1002223031587. The reversal of 1002223031525 is 5251303222001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 143952004 + 1002079079521 = 11998^2 + 1001039^2 .

It is not a de Polignac number, because 1002223031525 - 2² = 1002223031521 is a prime.

It is a super-2 number, since 2×1002223031525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002223031494 and 1002223031503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002223031521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20044460606 + ... + 20044460655.

It is an arithmetic number, because the mean of its divisors is an integer number (207126093187).

Almost surely, 2^{1002223031525} is an apocalyptic number.

It is an amenable number.

1002223031525 is a deficient number, since it is larger than the sum of its proper divisors (240533527597).

1002223031525 is an equidigital number, since it uses as much as digits as its factorization.

1002223031525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40088921271 (or 40088921266 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1002223031525 its reverse (5251303222001), we get a palindrome (6253526253526).

The spelling of 1002223031525 in words is "one trillion, two billion, two hundred twenty-three million, thirty-one thousand, five hundred twenty-five".