25188641 has 2 divisors, whose sum is σ = 25188642. Its totient is φ = 25188640.

The previous prime is 25188629. The next prime is 25188649. The reversal of 25188641 is 14688152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 38416 = 5015^2 + 196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25188641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25188649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12594320 + 12594321.

It is an arithmetic number, because the mean of its divisors is an integer number (12594321).

Almost surely, 2^25188641 is an apocalyptic number.

It is an amenable number.

25188641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25188641 is an equidigital number, since it uses as much as digits as its factorization.

25188641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 35.

The square root of 25188641 is about 5018.8286482007. The cubic root of 25188641 is about 293.1353845564.

The spelling of 25188641 in words is "twenty-five million, one hundred eighty-eight thousand, six hundred forty-one".