125540244550 has 96 divisors (see below), whose sum is σ = 278083005120. Its totient is φ = 41254348800.

The previous prime is 125540244509. The next prime is 125540244559. The reversal of 125540244550 is 55442045521.

It is a super-4 number, since 4×125540244550⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125540244559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1345410 + ... + 1435690.

It is an arithmetic number, because the mean of its divisors is an integer number (2896697970).

Almost surely, 2^125540244550 is an apocalyptic number.

125540244550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125540244550 is an abundant number, since it is smaller than the sum of its proper divisors (152542760570).

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

125540244550 is a wasteful number, since it uses less digits than its factorization.

125540244550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90466 (or 90461 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 37.

The spelling of 125540244550 in words is "one hundred twenty-five billion, five hundred forty million, two hundred forty-four thousand, five hundred fifty".