18899148525 has 24 divisors (see below), whose sum is σ = 31250764704. Its totient is φ = 10078200000.

The previous prime is 18899148473. The next prime is 18899148559. The reversal of 18899148525 is 52584199881.

It is not a de Polignac number, because 18899148525 - 2⁸ = 18899148269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 832627 + ... + 855023.

It is an arithmetic number, because the mean of its divisors is an integer number (1302115196).

Almost surely, 2^18899148525 is an apocalyptic number.

18899148525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18899148525 is a deficient number, since it is larger than the sum of its proper divisors (12351616179).

18899148525 is a wasteful number, since it uses less digits than its factorization.

18899148525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33661 (or 33656 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 60.

The spelling of 18899148525 in words is "eighteen billion, eight hundred ninety-nine million, one hundred forty-eight thousand, five hundred twenty-five".