125540455504 has 20 divisors (see below), whose sum is σ = 243240520276. Its totient is φ = 62768708352.

The previous prime is 125540455501. The next prime is 125540455519. The reversal of 125540455504 is 405554045521.

It can be written as a sum of positive squares in 2 ways, for example, as 52142809104 + 73397646400 = 228348^2 + 270920^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125540455501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907132 + ... + 1036324.

Almost surely, 2^125540455504 is an apocalyptic number.

It is an amenable number.

125540455504 is a deficient number, since it is larger than the sum of its proper divisors (117700064772).

125540455504 is a wasteful number, since it uses less digits than its factorization.

125540455504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189934 (or 189928 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 40.

The spelling of 125540455504 in words is "one hundred twenty-five billion, five hundred forty million, four hundred fifty-five thousand, five hundred four".