252454444240 has 40 divisors (see below), whose sum is σ = 586977743520. Its totient is φ = 100978137216.

The previous prime is 252454444217. The next prime is 252454444243. The reversal of 252454444240 is 42444454252.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 252454444193 and 252454444202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252454444243) 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, 3802207 + ... + 3868033.

It is an arithmetic number, because the mean of its divisors is an integer number (14674443588).

Almost surely, 2^252454444240 is an apocalyptic number.

252454444240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252454444240 is an abundant number, since it is smaller than the sum of its proper divisors (334523299280).

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

252454444240 is a wasteful number, since it uses less digits than its factorization.

252454444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113779 (or 113773 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 40.

Adding to 252454444240 its reverse (42444454252), we get a palindrome (294898898492).

The spelling of 252454444240 in words is "two hundred fifty-two billion, four hundred fifty-four million, four hundred forty-four thousand, two hundred forty".