99558725501 has 16 divisors (see below), whose sum is σ = 101042040000. Its totient is φ = 98087708160.

The previous prime is 99558725491. The next prime is 99558725531. The reversal of 99558725501 is 10552785599.

It is a cyclic number.

It is not a de Polignac number, because 99558725501 - 2⁶ = 99558725437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99558725531) 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, 26668031 + ... + 26671763.

It is an arithmetic number, because the mean of its divisors is an integer number (6315127500).

Almost surely, 2^99558725501 is an apocalyptic number.

It is an amenable number.

99558725501 is a deficient number, since it is larger than the sum of its proper divisors (1483314499).

99558725501 is a wasteful number, since it uses less digits than its factorization.

99558725501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276.

The product of its (nonzero) digits is 5670000, while the sum is 56.

The spelling of 99558725501 in words is "ninety-nine billion, five hundred fifty-eight million, seven hundred twenty-five thousand, five hundred one".