125541502540 has 24 divisors (see below), whose sum is σ = 263670401232. Its totient is φ = 50210268480.

The previous prime is 125541502487. The next prime is 125541502601. The reversal of 125541502540 is 45205145521.

It is a junction number, because it is equal to n+sod(n) for n = 125541502496 and 125541502505.

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, 231559 + ... + 551998.

It is an arithmetic number, because the mean of its divisors is an integer number (10986266718).

Almost surely, 2^125541502540 is an apocalyptic number.

125541502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125541502540 is an abundant number, since it is smaller than the sum of its proper divisors (138128898692).

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

125541502540 is a wasteful number, since it uses less digits than its factorization.

125541502540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791577 (or 791575 counting only the distinct ones).

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

The spelling of 125541502540 in words is "one hundred twenty-five billion, five hundred forty-one million, five hundred two thousand, five hundred forty".