25687085 has 16 divisors (see below), whose sum is σ = 32803056. Its totient is φ = 19243008.

The previous prime is 25687073. The next prime is 25687097. The reversal of 25687085 is 58078652.

It is an interprime number because it is at equal distance from previous prime (25687073) and next prime (25687097).

It can be written as a sum of positive squares in 8 ways, for example, as 1999396 + 23687689 = 1414^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 25687085 - 2¹⁶ = 25621549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19157 + ... + 20453.

It is an arithmetic number, because the mean of its divisors is an integer number (2050191).

Almost surely, 2^25687085 is an apocalyptic number.

It is an amenable number.

25687085 is a deficient number, since it is larger than the sum of its proper divisors (7115971).

25687085 is a wasteful number, since it uses less digits than its factorization.

25687085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 25687085 is about 5068.2427921322. The cubic root of 25687085 is about 295.0563332044.

The spelling of 25687085 in words is "twenty-five million, six hundred eighty-seven thousand, eighty-five".