125542366640 has 40 divisors (see below), whose sum is σ = 291998364480. Its totient is φ = 50197615616.

The previous prime is 125542366633. The next prime is 125542366673. The reversal of 125542366640 is 46663245521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 125542366591 and 125542366600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92024 + ... + 509463.

It is an arithmetic number, because the mean of its divisors is an integer number (7299959112).

Almost surely, 2^125542366640 is an apocalyptic number.

125542366640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125542366640 is an abundant number, since it is smaller than the sum of its proper divisors (166455997840).

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

125542366640 is a wasteful number, since it uses less digits than its factorization.

125542366640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604109 (or 604103 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 125542366640 in words is "one hundred twenty-five billion, five hundred forty-two million, three hundred sixty-six thousand, six hundred forty".