9975216252 has 24 divisors (see below), whose sum is σ = 23404103632. Its totient is φ = 3306700800.

The previous prime is 9975216241. The next prime is 9975216253. The reversal of 9975216252 is 2526125799.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9975216253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294149 + ... + 2298492.

Almost surely, 2^9975216252 is an apocalyptic number.

It is an amenable number.

9975216252 is an abundant number, since it is smaller than the sum of its proper divisors (13428887380).

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

9975216252 is a wasteful number, since it uses less digits than its factorization.

9975216252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592829 (or 4592827 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 9975216252 is about 99876.0043854378. The cubic root of 9975216252 is about 2152.6533854256.

The spelling of 9975216252 in words is "nine billion, nine hundred seventy-five million, two hundred sixteen thousand, two hundred fifty-two".