202243121425 has 12 divisors (see below), whose sum is σ = 250789412736. Its totient is φ = 161789373200.

The previous prime is 202243121407. The next prime is 202243121449. The reversal of 202243121425 is 524121342202.

It is not a de Polignac number, because 202243121425 - 2¹⁷ = 202242990353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202243121393 and 202243121402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 812520 + ... + 1031830.

It is an arithmetic number, because the mean of its divisors is an integer number (20899117728).

Almost surely, 2^202243121425 is an apocalyptic number.

202243121425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

202243121425 is a deficient number, since it is larger than the sum of its proper divisors (48546291311).

202243121425 is a wasteful number, since it uses less digits than its factorization.

202243121425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256208 (or 256203 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 202243121425 its reverse (524121342202), we get a palindrome (726364463627).

The spelling of 202243121425 in words is "two hundred two billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred twenty-five".