25891485 has 16 divisors (see below), whose sum is σ = 41489664. Its totient is φ = 13787712.

The previous prime is 25891457. The next prime is 25891487. The reversal of 25891485 is 58419852.

It is a happy number.

It is not a de Polignac number, because 25891485 - 2¹⁶ = 25825949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25891487) 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, 17484 + ... + 18906.

It is an arithmetic number, because the mean of its divisors is an integer number (2593104).

Almost surely, 2^25891485 is an apocalyptic number.

It is an amenable number.

25891485 is a deficient number, since it is larger than the sum of its proper divisors (15598179).

25891485 is a wasteful number, since it uses less digits than its factorization.

25891485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644.

The product of its digits is 115200, while the sum is 42.

The square root of 25891485 is about 5088.3676164365. The cubic root of 25891485 is about 295.8368843498.

The spelling of 25891485 in words is "twenty-five million, eight hundred ninety-one thousand, four hundred eighty-five".