90125718623 has 4 divisors (see below), whose sum is σ = 90502813920. Its totient is φ = 89748623328.

The previous prime is 90125718583. The next prime is 90125718653. The reversal of 90125718623 is 32681752109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90125718623 - 2⁶ = 90125718559 is a prime.

It is a super-2 number, since 2×90125718623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90125718653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188547290 + ... + 188547767.

It is an arithmetic number, because the mean of its divisors is an integer number (22625703480).

Almost surely, 2^90125718623 is an apocalyptic number.

90125718623 is a deficient number, since it is larger than the sum of its proper divisors (377095297).

90125718623 is a wasteful number, since it uses less digits than its factorization.

90125718623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377095296.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 90125718623 in words is "ninety billion, one hundred twenty-five million, seven hundred eighteen thousand, six hundred twenty-three".