125121230225 has 24 divisors (see below), whose sum is σ = 156070582272. Its totient is φ = 99504003200.

The previous prime is 125121230197. The next prime is 125121230231. The reversal of 125121230225 is 522032121521.

It is a happy number.

It is not a de Polignac number, because 125121230225 - 2¹⁰ = 125121229201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125121230194 and 125121230203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7550549 + ... + 7567101.

It is an arithmetic number, because the mean of its divisors is an integer number (6502940928).

Almost surely, 2^125121230225 is an apocalyptic number.

It is an amenable number.

125121230225 is a deficient number, since it is larger than the sum of its proper divisors (30949352047).

125121230225 is a wasteful number, since it uses less digits than its factorization.

125121230225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18337 (or 18332 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 125121230225 its reverse (522032121521), we get a palindrome (647153351746).

The spelling of 125121230225 in words is "one hundred twenty-five billion, one hundred twenty-one million, two hundred thirty thousand, two hundred twenty-five".