90925165444 has 9 divisors (see below), whose sum is σ = 159120094917. Its totient is φ = 45462281184.

The previous prime is 90925165423. The next prime is 90925165447. The reversal of 90925165444 is 44456152909.

It is a happy number.

The square root of 90925165444 is 301538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 90383207044 + 541958400 = 300638^2 + 23280^2 .

It is a super-2 number, since 2×90925165444² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90925165447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 527692 + ... + 678460.

Almost surely, 2^90925165444 is an apocalyptic number.

90925165444 is the 301538-th square number.

It is an amenable number.

90925165444 is a deficient number, since it is larger than the sum of its proper divisors (68194929473).

90925165444 is an frugal number, since it uses more digits than its factorization.

90925165444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301542 (or 150771 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

Multiplying 90925165444 by its sum of digits (49), we get a square (4455333106756 = 2110766²).

The spelling of 90925165444 in words is "ninety billion, nine hundred twenty-five million, one hundred sixty-five thousand, four hundred forty-four".