125728716553 has 16 divisors (see below), whose sum is σ = 138683750400. Its totient is φ = 113030977680.

The previous prime is 125728716527. The next prime is 125728716559. The reversal of 125728716553 is 355617827521.

It is a cyclic number.

It is not a de Polignac number, because 125728716553 - 2¹³ = 125728708361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125728716553.

It is not an unprimeable number, because it can be changed into a prime (125728716559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737458 + ... + 891796.

It is an arithmetic number, because the mean of its divisors is an integer number (8667734400).

Almost surely, 2^125728716553 is an apocalyptic number.

It is an amenable number.

125728716553 is a deficient number, since it is larger than the sum of its proper divisors (12955033847).

125728716553 is a wasteful number, since it uses less digits than its factorization.

125728716553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155172.

The product of its digits is 3528000, while the sum is 52.

The spelling of 125728716553 in words is "one hundred twenty-five billion, seven hundred twenty-eight million, seven hundred sixteen thousand, five hundred fifty-three".