202525421202 has 160 divisors (see below), whose sum is σ = 494969195952. Its totient is φ = 61523214336.

The previous prime is 202525421201. The next prime is 202525421237. The reversal of 202525421202 is 202124525202.

It is a happy number.

202525421202 is a `hidden beast` number, since 202 + 5 + 254 + 2 + 1 + 202 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 7082737281 + 195442683921 = 84159^2 + 442089^2 .

It is a super-2 number, since 2×202525421202² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (202525421201) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 55682928 + ... + 55686564.

Almost surely, 2^202525421202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202525421202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247484597976).

202525421202 is an abundant number, since it is smaller than the sum of its proper divisors (292443774750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202525421202 is a wasteful number, since it uses less digits than its factorization.

202525421202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994 (or 3985 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 202525421202 its reverse (202124525202), we get a palindrome (404649946404).

The spelling of 202525421202 in words is "two hundred two billion, five hundred twenty-five million, four hundred twenty-one thousand, two hundred two".