52002402500 has 60 divisors (see below), whose sum is σ = 114309131244. Its totient is φ = 20692992000.

The previous prime is 52002402499. The next prime is 52002402509. The reversal of 52002402500 is 520420025.

It can be written as a sum of positive squares in 10 ways, for example, as 40725661636 + 11276740864 = 201806^2 + 106192^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (52002402509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 428612 + ... + 536388.

Almost surely, 2^52002402500 is an apocalyptic number.

52002402500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52002402500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57154565622).

52002402500 is an abundant number, since it is smaller than the sum of its proper divisors (62306728744).

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

52002402500 is a wasteful number, since it uses less digits than its factorization.

52002402500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107994 (or 107977 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

Adding to 52002402500 its reverse (520420025), we get a palindrome (52522822525).

The spelling of 52002402500 in words is "fifty-two billion, two million, four hundred two thousand, five hundred".