125523220245 has 64 divisors (see below), whose sum is σ = 218380561920. Its totient is φ = 61374967808.

The previous prime is 125523220243. The next prime is 125523220259. The reversal of 125523220245 is 542022325521.

It is a cyclic number.

It is not a de Polignac number, because 125523220245 - 2¹ = 125523220243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125523220241) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1324897 + ... + 1416473.

It is an arithmetic number, because the mean of its divisors is an integer number (3412196280).

Almost surely, 2^125523220245 is an apocalyptic number.

125523220245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125523220245 is a deficient number, since it is larger than the sum of its proper divisors (92857341675).

125523220245 is a wasteful number, since it uses less digits than its factorization.

125523220245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91774.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 125523220245 its reverse (542022325521), we get a palindrome (667545545766).

The spelling of 125523220245 in words is "one hundred twenty-five billion, five hundred twenty-three million, two hundred twenty thousand, two hundred forty-five".