25165487 has 2 divisors, whose sum is σ = 25165488. Its totient is φ = 25165486.

The previous prime is 25165471. The next prime is 25165499. The reversal of 25165487 is 78456152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25165487 - 2⁴ = 25165471 is a prime.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 25165487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25195487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12582743 + 12582744.

It is an arithmetic number, because the mean of its divisors is an integer number (12582744).

Almost surely, 2^25165487 is an apocalyptic number.

25165487 is a deficient number, since it is larger than the sum of its proper divisors (1).

25165487 is an equidigital number, since it uses as much as digits as its factorization.

25165487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 25165487 is about 5016.5214043199. The cubic root of 25165487 is about 293.0455380071.

It can be divided in two parts, 25165 and 487, that added together give a palindrome (25652).

The spelling of 25165487 in words is "twenty-five million, one hundred sixty-five thousand, four hundred eighty-seven".