252253402540 has 24 divisors (see below), whose sum is σ = 531129871440. Its totient is φ = 100635127488.

The previous prime is 252253402517. The next prime is 252253402553. The reversal of 252253402540 is 45204352252.

It is a super-3 number, since 3×252253402540³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252253402496 and 252253402505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16631827 + ... + 16646986.

It is an arithmetic number, because the mean of its divisors is an integer number (22130411310).

Almost surely, 2^252253402540 is an apocalyptic number.

252253402540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252253402540 is an abundant number, since it is smaller than the sum of its proper divisors (278876468900).

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

252253402540 is a wasteful number, since it uses less digits than its factorization.

252253402540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33279201 (or 33279199 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 252253402540 its reverse (45204352252), we get a palindrome (297457754792).

The spelling of 252253402540 in words is "two hundred fifty-two billion, two hundred fifty-three million, four hundred two thousand, five hundred forty".