125105215452 has 48 divisors (see below), whose sum is σ = 333632796672. Its totient is φ = 35742323520.

The previous prime is 125105215427. The next prime is 125105215453. The reversal of 125105215452 is 254512501521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125105215453) 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 15 ways as a sum of consecutive naturals, for example, 2085802 + ... + 2144942.

It is an arithmetic number, because the mean of its divisors is an integer number (6950683264).

Almost surely, 2^125105215452 is an apocalyptic number.

125105215452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125105215452 is an abundant number, since it is smaller than the sum of its proper divisors (208527581220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125105215452 is a wasteful number, since it uses less digits than its factorization.

125105215452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84338 (or 84336 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 125105215452 its reverse (254512501521), we get a palindrome (379617716973).

The spelling of 125105215452 in words is "one hundred twenty-five billion, one hundred five million, two hundred fifteen thousand, four hundred fifty-two".