25748685 has 20 divisors (see below), whose sum is σ = 46157628. Its totient is φ = 13732416.

The previous prime is 25748683. The next prime is 25748687. The reversal of 25748685 is 58684752.

It is an interprime number because it is at equal distance from previous prime (25748683) and next prime (25748687).

It can be written as a sum of positive squares in 2 ways, for example, as 18507204 + 7241481 = 4302^2 + 2691^2 .

It is not a de Polignac number, because 25748685 - 2¹ = 25748683 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25748685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25748683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31384 + ... + 32193.

Almost surely, 2^25748685 is an apocalyptic number.

It is an amenable number.

25748685 is a deficient number, since it is larger than the sum of its proper divisors (20408943).

25748685 is an equidigital number, since it uses as much as digits as its factorization.

25748685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63594 (or 63585 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 25748685 is about 5074.3162100918. The cubic root of 25748685 is about 295.2920023566.

The spelling of 25748685 in words is "twenty-five million, seven hundred forty-eight thousand, six hundred eighty-five".