125440521550 has 24 divisors (see below), whose sum is σ = 234149714352. Its totient is φ = 49997640000.

The previous prime is 125440521527. The next prime is 125440521589. The reversal of 125440521550 is 55125044521.

125440521550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4450026 + ... + 4478125.

It is an arithmetic number, because the mean of its divisors is an integer number (9756238098).

Almost surely, 2^125440521550 is an apocalyptic number.

125440521550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125440521550 is a deficient number, since it is larger than the sum of its proper divisors (108709192802).

125440521550 is a wasteful number, since it uses less digits than its factorization.

125440521550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928444 (or 8928439 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 125440521550 in words is "one hundred twenty-five billion, four hundred forty million, five hundred twenty-one thousand, five hundred fifty".