125355547503 has 6 divisors (see below), whose sum is σ = 181069124184. Its totient is φ = 83570364996.

The previous prime is 125355547487. The next prime is 125355547517. The reversal of 125355547503 is 305745553521.

125355547503 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 55 + 547 + 50 + 3 = 666.

It is not a de Polignac number, because 125355547503 - 2⁴ = 125355547487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125355547573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6964197075 + ... + 6964197092.

It is an arithmetic number, because the mean of its divisors is an integer number (30178187364).

Almost surely, 2^125355547503 is an apocalyptic number.

125355547503 is a deficient number, since it is larger than the sum of its proper divisors (55713576681).

125355547503 is a wasteful number, since it uses less digits than its factorization.

125355547503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928394173 (or 13928394170 counting only the distinct ones).

The product of its (nonzero) digits is 1575000, while the sum is 45.

The spelling of 125355547503 in words is "one hundred twenty-five billion, three hundred fifty-five million, five hundred forty-seven thousand, five hundred three".