25084621 has 2 divisors, whose sum is σ = 25084622. Its totient is φ = 25084620.

The previous prime is 25084607. The next prime is 25084627. The reversal of 25084621 is 12648052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 34596 = 5005^2 + 186^2 .

It is a cyclic number.

It is not a de Polignac number, because 25084621 - 2⁹ = 25084109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25084621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25084627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12542310 + 12542311.

It is an arithmetic number, because the mean of its divisors is an integer number (12542311).

Almost surely, 2^25084621 is an apocalyptic number.

It is an amenable number.

25084621 is a deficient number, since it is larger than the sum of its proper divisors (1).

25084621 is an equidigital number, since it uses as much as digits as its factorization.

25084621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25084621 is about 5008.4549513797. The cubic root of 25084621 is about 292.7313133610.

The spelling of 25084621 in words is "twenty-five million, eighty-four thousand, six hundred twenty-one".