245140321025 has 6 divisors (see below), whose sum is σ = 303973998102. Its totient is φ = 196112256800.

The previous prime is 245140321001. The next prime is 245140321037. The reversal of 245140321025 is 520123041542.

It can be written as a sum of positive squares in 3 ways, for example, as 41124595264 + 204015725761 = 202792^2 + 451681^2 .

It is not a de Polignac number, because 245140321025 - 2⁶ = 245140320961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4902806396 + ... + 4902806445.

It is an arithmetic number, because the mean of its divisors is an integer number (50662333017).

Almost surely, 2^245140321025 is an apocalyptic number.

245140321025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245140321025 is a deficient number, since it is larger than the sum of its proper divisors (58833677077).

245140321025 is an equidigital number, since it uses as much as digits as its factorization.

245140321025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9805612851 (or 9805612846 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 245140321025 its reverse (520123041542), we get a palindrome (765263362567).

The spelling of 245140321025 in words is "two hundred forty-five billion, one hundred forty million, three hundred twenty-one thousand, twenty-five".