52145232225220 has 24 divisors (see below), whose sum is σ = 109519590600000. Its totient is φ = 20855311380192.

The previous prime is 52145232225209. The next prime is 52145232225241. The reversal of 52145232225220 is 2252223254125.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52145232225220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173690640 + ... + 173990599.

It is an arithmetic number, because the mean of its divisors is an integer number (4563316275000).

Almost surely, 2^{52145232225220} is an apocalyptic number.

It is an amenable number.

52145232225220 is an abundant number, since it is smaller than the sum of its proper divisors (57374358374780).

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

52145232225220 is a wasteful number, since it uses less digits than its factorization.

52145232225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347688747 (or 347688745 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 52145232225220 its reverse (2252223254125), we get a palindrome (54397455479345).

The spelling of 52145232225220 in words is "fifty-two trillion, one hundred forty-five billion, two hundred thirty-two million, two hundred twenty-five thousand, two hundred twenty".