925621 has 2 divisors, whose sum is σ = 925622. Its totient is φ = 925620.

The previous prime is 925619. The next prime is 925637. The reversal of 925621 is 126529.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 140625 = 886^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 925621 - 2¹ = 925619 is a prime.

Together with 925619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (925121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462810 + 462811.

It is an arithmetic number, because the mean of its divisors is an integer number (462811).

2⁹²⁵⁶²¹ is an apocalyptic number.

It is an amenable number.

925621 is a deficient number, since it is larger than the sum of its proper divisors (1).

925621 is an equidigital number, since it uses as much as digits as its factorization.

925621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 925621 is about 962.0919914436. The cubic root of 925621 is about 97.4565574599.

It can be divided in two parts, 9256 and 21, that multiplied together give a triangular number (194376 = T₆₂₃).

The spelling of 925621 in words is "nine hundred twenty-five thousand, six hundred twenty-one".