7025621 has 2 divisors, whose sum is σ = 7025622. Its totient is φ = 7025620.

The previous prime is 7025617. The next prime is 7025633. The reversal of 7025621 is 1265207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6682225 + 343396 = 2585^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 7025621 - 2² = 7025617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7025651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3512810 + 3512811.

It is an arithmetic number, because the mean of its divisors is an integer number (3512811).

Almost surely, 2^7025621 is an apocalyptic number.

It is an amenable number.

7025621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7025621 is an equidigital number, since it uses as much as digits as its factorization.

7025621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 7025621 is about 2650.5888025116. The cubic root of 7025621 is about 191.5262208254.

The spelling of 7025621 in words is "seven million, twenty-five thousand, six hundred twenty-one".