245311503225 has 96 divisors (see below), whose sum is σ = 434865024000. Its totient is φ = 121584967680.

The previous prime is 245311503221. The next prime is 245311503247. The reversal of 245311503225 is 522305113542.

It is not a de Polignac number, because 245311503225 - 2² = 245311503221 is a prime.

It is a super-2 number, since 2×245311503225² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245311503221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 139459896 + ... + 139461654.

It is an arithmetic number, because the mean of its divisors is an integer number (4529844000).

Almost surely, 2^245311503225 is an apocalyptic number.

245311503225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245311503225 is a deficient number, since it is larger than the sum of its proper divisors (189553520775).

245311503225 is a wasteful number, since it uses less digits than its factorization.

245311503225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 245311503225 its reverse (522305113542), we get a palindrome (767616616767).

The spelling of 245311503225 in words is "two hundred forty-five billion, three hundred eleven million, five hundred three thousand, two hundred twenty-five".