252135025544 has 16 divisors (see below), whose sum is σ = 472760355600. Its totient is φ = 126065597392.

The previous prime is 252135025543. The next prime is 252135025561. The reversal of 252135025544 is 445520531252.

252135025544 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×252135025544² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252135025498 and 252135025507.

It is not an unprimeable number, because it can be changed into a prime (252135025543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430199 + ... + 830265.

It is an arithmetic number, because the mean of its divisors is an integer number (29547522225).

Almost surely, 2^252135025544 is an apocalyptic number.

It is an amenable number.

252135025544 is a deficient number, since it is larger than the sum of its proper divisors (220625330056).

252135025544 is a wasteful number, since it uses less digits than its factorization.

252135025544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478852 (or 478848 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 252135025544 its reverse (445520531252), we get a palindrome (697655556796).

The spelling of 252135025544 in words is "two hundred fifty-two billion, one hundred thirty-five million, twenty-five thousand, five hundred forty-four".