245205252140 has 12 divisors (see below), whose sum is σ = 514931029536. Its totient is φ = 98082100848.

The previous prime is 245205252119. The next prime is 245205252233. The reversal of 245205252140 is 41252502542.

It is a junction number, because it is equal to n+sod(n) for n = 245205252097 and 245205252106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6130131284 + ... + 6130131323.

It is an arithmetic number, because the mean of its divisors is an integer number (42910919128).

Almost surely, 2^245205252140 is an apocalyptic number.

245205252140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245205252140 is an abundant number, since it is smaller than the sum of its proper divisors (269725777396).

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

245205252140 is a wasteful number, since it uses less digits than its factorization.

245205252140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260262616 (or 12260262614 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 245205252140 its reverse (41252502542), we get a palindrome (286457754682).

The spelling of 245205252140 in words is "two hundred forty-five billion, two hundred five million, two hundred fifty-two thousand, one hundred forty".