45025621 has 2 divisors, whose sum is σ = 45025622. Its totient is φ = 45025620.

The previous prime is 45025613. The next prime is 45025627. The reversal of 45025621 is 12652054.

45025621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45024100 + 1521 = 6710^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 45025621 - 2³ = 45025613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45025627) 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, 22512810 + 22512811.

It is an arithmetic number, because the mean of its divisors is an integer number (22512811).

Almost surely, 2^45025621 is an apocalyptic number.

It is an amenable number.

45025621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45025621 is an equidigital number, since it uses as much as digits as its factorization.

45025621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 45025621 is about 6710.1133373439. The cubic root of 45025621 is about 355.7568222071.

Adding to 45025621 its reverse (12652054), we get a palindrome (57677675).

The spelling of 45025621 in words is "forty-five million, twenty-five thousand, six hundred twenty-one".