25385189 has 2 divisors, whose sum is σ = 25385190. Its totient is φ = 25385188.

The previous prime is 25385137. The next prime is 25385201. The reversal of 25385189 is 98158352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21252100 + 4133089 = 4610^2 + 2033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25385189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25385489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692594 + 12692595.

It is an arithmetic number, because the mean of its divisors is an integer number (12692595).

Almost surely, 2^25385189 is an apocalyptic number.

It is an amenable number.

25385189 is a deficient number, since it is larger than the sum of its proper divisors (1).

25385189 is an equidigital number, since it uses as much as digits as its factorization.

25385189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 25385189 is about 5038.3716615589. The cubic root of 25385189 is about 293.8958591156.

The spelling of 25385189 in words is "twenty-five million, three hundred eighty-five thousand, one hundred eighty-nine".