231513510050225 has 24 divisors (see below), whose sum is σ = 309226167758592. Its totient is φ = 170926999848000.

The previous prime is 231513510050197. The next prime is 231513510050299. The reversal of 231513510050225 is 522050015315132.

It is a happy number.

It is not a de Polignac number, because 231513510050225 - 2¹⁰ = 231513510049201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75203201 + ... + 78221150.

It is an arithmetic number, because the mean of its divisors is an integer number (12884423656608).

Almost surely, 2^{231513510050225} is an apocalyptic number.

231513510050225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231513510050225 is a deficient number, since it is larger than the sum of its proper divisors (77712657708367).

231513510050225 is a wasteful number, since it uses less digits than its factorization.

231513510050225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153429017 (or 153429012 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 231513510050225 its reverse (522050015315132), we get a palindrome (753563525365357).

The spelling of 231513510050225 in words is "two hundred thirty-one trillion, five hundred thirteen billion, five hundred ten million, fifty thousand, two hundred twenty-five".