925921481 has 4 divisors (see below), whose sum is σ = 926009364. Its totient is φ = 925833600.

The previous prime is 925921459. The next prime is 925921489. The reversal of 925921481 is 184129529.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 184129529 = 1409 ⋅130681.

It can be written as a sum of positive squares in 2 ways, for example, as 685392400 + 240529081 = 26180^2 + 15509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-925921481 is a prime.

It is a super-2 number, since 2×925921481² = 1714661177954466722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (925921489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25580 + ... + 50061.

It is an arithmetic number, because the mean of its divisors is an integer number (231502341).

Almost surely, 2^925921481 is an apocalyptic number.

It is an amenable number.

925921481 is a deficient number, since it is larger than the sum of its proper divisors (87883).

925921481 is a wasteful number, since it uses less digits than its factorization.

925921481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87882.

The product of its digits is 51840, while the sum is 41.

The square root of 925921481 is about 30428.9579348357. The cubic root of 925921481 is about 974.6710197567.

The spelling of 925921481 in words is "nine hundred twenty-five million, nine hundred twenty-one thousand, four hundred eighty-one".