25681485 has 16 divisors (see below), whose sum is σ = 42416640. Its totient is φ = 13254720.

The previous prime is 25681463. The next prime is 25681489. The reversal of 25681485 is 58418652.

It is not a de Polignac number, because 25681485 - 2⁹ = 25680973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25681489) 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, 27150 + ... + 28079.

It is an arithmetic number, because the mean of its divisors is an integer number (2651040).

Almost surely, 2^25681485 is an apocalyptic number.

It is an amenable number.

25681485 is a deficient number, since it is larger than the sum of its proper divisors (16735155).

25681485 is a wasteful number, since it uses less digits than its factorization.

25681485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55268.

The product of its digits is 76800, while the sum is 39.

The square root of 25681485 is about 5067.6903022975. The cubic root of 25681485 is about 295.0348900608.

The spelling of 25681485 in words is "twenty-five million, six hundred eighty-one thousand, four hundred eighty-five".