25746985 has 12 divisors (see below), whose sum is σ = 33961284. Its totient is φ = 18724640.

The previous prime is 25746979. The next prime is 25746989. The reversal of 25746985 is 58964752.

It can be written as a sum of positive squares in 2 ways, for example, as 19456921 + 6290064 = 4411^2 + 2508^2 .

It is not a de Polignac number, because 25746985 - 2³ = 25746977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25746989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20674 + ... + 21883.

It is an arithmetic number, because the mean of its divisors is an integer number (2830107).

Almost surely, 2^25746985 is an apocalyptic number.

It is an amenable number.

25746985 is a deficient number, since it is larger than the sum of its proper divisors (8214299).

25746985 is a wasteful number, since it uses less digits than its factorization.

25746985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42584 (or 42573 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 25746985 is about 5074.1486970722. The cubic root of 25746985 is about 295.2855035464.

It can be divided in two parts, 2574 and 6985, that added together give a palindrome (9559).

The spelling of 25746985 in words is "twenty-five million, seven hundred forty-six thousand, nine hundred eighty-five".