252111563400 has 96 divisors (see below), whose sum is σ = 781912856160. Its totient is φ = 67198179840.

The previous prime is 252111563377. The next prime is 252111563401. The reversal of 252111563400 is 4365111252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (252111563401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1194219 + ... + 1389381.

It is an arithmetic number, because the mean of its divisors is an integer number (8144925585).

Almost surely, 2^252111563400 is an apocalyptic number.

252111563400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252111563400 is an abundant number, since it is smaller than the sum of its proper divisors (529801292760).

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

252111563400 is a wasteful number, since it uses less digits than its factorization.

252111563400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197335 (or 197326 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 252111563400 its reverse (4365111252), we get a palindrome (256476674652).

The spelling of 252111563400 in words is "two hundred fifty-two billion, one hundred eleven million, five hundred sixty-three thousand, four hundred".