925664621 has 8 divisors (see below), whose sum is σ = 1064641920. Its totient is φ = 788372208.

The previous prime is 925664611. The next prime is 925664633. The reversal of 925664621 is 126466529.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-925664621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (925664611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420041 + ... + 422238.

It is an arithmetic number, because the mean of its divisors is an integer number (133080240).

Almost surely, 2^925664621 is an apocalyptic number.

It is an amenable number.

925664621 is a deficient number, since it is larger than the sum of its proper divisors (138977299).

925664621 is a wasteful number, since it uses less digits than its factorization.

925664621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842443.

The product of its digits is 155520, while the sum is 41.

The square root of 925664621 is about 30424.7369914680. The cubic root of 925664621 is about 974.5808835493.

The spelling of 925664621 in words is "nine hundred twenty-five million, six hundred sixty-four thousand, six hundred twenty-one".