100665090525 has 24 divisors (see below), whose sum is σ = 169253854560. Its totient is φ = 52778079040.

The previous prime is 100665090509. The next prime is 100665090527. The reversal of 100665090525 is 525090566001.

It is not a de Polignac number, because 100665090525 - 2⁴ = 100665090509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100665090527) 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, 11370162 + ... + 11379011.

It is an arithmetic number, because the mean of its divisors is an integer number (7052243940).

Almost surely, 2^100665090525 is an apocalyptic number.

100665090525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100665090525 is a deficient number, since it is larger than the sum of its proper divisors (68588764035).

100665090525 is a wasteful number, since it uses less digits than its factorization.

100665090525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22749245 (or 22749240 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 100665090525 in words is "one hundred billion, six hundred sixty-five million, ninety thousand, five hundred twenty-five".