125802801603 has 24 divisors (see below), whose sum is σ = 188550410048. Its totient is φ = 80760540672.

The previous prime is 125802801581. The next prime is 125802801611. The reversal of 125802801603 is 306108208521.

It is a happy number.

125802801603 is a `hidden beast` number, since 1 + 25 + 8 + 0 + 28 + 0 + 1 + 603 = 666.

It is not a de Polignac number, because 125802801603 - 2¹⁰ = 125802800579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125802801613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1915051 + ... + 1979652.

Almost surely, 2^125802801603 is an apocalyptic number.

125802801603 is a deficient number, since it is larger than the sum of its proper divisors (62747608445).

125802801603 is a wasteful number, since it uses less digits than its factorization.

125802801603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894843 (or 3894840 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 125802801603 in words is "one hundred twenty-five billion, eight hundred two million, eight hundred one thousand, six hundred three".