125401210421052 has 24 divisors (see below), whose sum is σ = 292603536489600. Its totient is φ = 41800301734576.

The previous prime is 125401210421033. The next prime is 125401210421057. The reversal of 125401210421052 is 250124012104521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125401210421057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495902 + ... + 17521157.

It is an arithmetic number, because the mean of its divisors is an integer number (12191814020400).

Almost surely, 2^{125401210421052} is an apocalyptic number.

125401210421052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125401210421052 is an abundant number, since it is smaller than the sum of its proper divisors (167202326068548).

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

125401210421052 is a wasteful number, since it uses less digits than its factorization.

125401210421052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25434785 (or 25434783 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 125401210421052 its reverse (250124012104521), we get a palindrome (375525222525573).

The spelling of 125401210421052 in words is "one hundred twenty-five trillion, four hundred one billion, two hundred ten million, four hundred twenty-one thousand, fifty-two".