925421681 has 4 divisors (see below), whose sum is σ = 945111552. Its totient is φ = 905731812.

The previous prime is 925421671. The next prime is 925421699. The reversal of 925421681 is 186124529.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 925421681 - 2¹⁴ = 925405297 is a prime.

It is a super-2 number, since 2×925421681² = 1712810575329731522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (925421611) 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, 9844865 + ... + 9844958.

It is an arithmetic number, because the mean of its divisors is an integer number (236277888).

Almost surely, 2^925421681 is an apocalyptic number.

It is an amenable number.

925421681 is a deficient number, since it is larger than the sum of its proper divisors (19689871).

925421681 is a wasteful number, since it uses less digits than its factorization.

925421681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19689870.

The product of its digits is 34560, while the sum is 38.

The square root of 925421681 is about 30420.7442545379. The cubic root of 925421681 is about 974.4956167438.

The spelling of 925421681 in words is "nine hundred twenty-five million, four hundred twenty-one thousand, six hundred eighty-one".