152185581252 has 36 divisors (see below), whose sum is σ = 393637644400. Its totient is φ = 49548793392.

The previous prime is 152185581211. The next prime is 152185581257. The reversal of 152185581252 is 252185581251.

152185581252 is a `hidden beast` number, since 1 + 5 + 2 + 18 + 5 + 581 + 2 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×152185581252² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 152185581198 and 152185581207.

It is not an unprimeable number, because it can be changed into a prime (152185581257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49154002 + ... + 49157097.

Almost surely, 2^152185581252 is an apocalyptic number.

152185581252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

152185581252 is an abundant number, since it is smaller than the sum of its proper divisors (241452063148).

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

152185581252 is a wasteful number, since it uses less digits than its factorization.

152185581252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98311152 (or 98311147 counting only the distinct ones).

The product of its digits is 320000, while the sum is 45.

Subtracting 152185581252 from its reverse (252185581251), we obtain a palindrome (99999999999).

The spelling of 152185581252 in words is "one hundred fifty-two billion, one hundred eighty-five million, five hundred eighty-one thousand, two hundred fifty-two".