125321554120 has 64 divisors (see below), whose sum is σ = 322313022720. Its totient is φ = 42959710464.

The previous prime is 125321554109. The next prime is 125321554139. The reversal of 125321554120 is 21455123521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657869 + ... + 1731811.

It is an arithmetic number, because the mean of its divisors is an integer number (5036140980).

Almost surely, 2^125321554120 is an apocalyptic number.

125321554120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125321554120 is an abundant number, since it is smaller than the sum of its proper divisors (196991468600).

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

125321554120 is a wasteful number, since it uses less digits than its factorization.

125321554120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80014 (or 80010 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 125321554120 its reverse (21455123521), we get a palindrome (146776677641).

The spelling of 125321554120 in words is "one hundred twenty-five billion, three hundred twenty-one million, five hundred fifty-four thousand, one hundred twenty".