25487165 has 16 divisors (see below), whose sum is σ = 35328960. Its totient is φ = 17445120.

The previous prime is 25487141. The next prime is 25487167. The reversal of 25487165 is 56178452.

It is not a de Polignac number, because 25487165 - 2¹⁶ = 25421629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25487167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12695 + ... + 14564.

It is an arithmetic number, because the mean of its divisors is an integer number (2208060).

Almost surely, 2^25487165 is an apocalyptic number.

It is an amenable number.

25487165 is a deficient number, since it is larger than the sum of its proper divisors (9841795).

25487165 is a wasteful number, since it uses less digits than its factorization.

25487165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27292.

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

The square root of 25487165 is about 5048.4814548535. The cubic root of 25487165 is about 294.2888741363.

It can be divided in two parts, 25487 and 165, that added together give a palindrome (25652).

The spelling of 25487165 in words is "twenty-five million, four hundred eighty-seven thousand, one hundred sixty-five".