25485618 has 16 divisors (see below), whose sum is σ = 53969760. Its totient is φ = 7995456.

The previous prime is 25485611. The next prime is 25485623. The reversal of 25485618 is 81658452.

It is not an unprimeable number, because it can be changed into a prime (25485611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124828 + ... + 125031.

It is an arithmetic number, because the mean of its divisors is an integer number (3373110).

Almost surely, 2^25485618 is an apocalyptic number.

25485618 is an abundant number, since it is smaller than the sum of its proper divisors (28484142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25485618 is a wasteful number, since it uses less digits than its factorization.

25485618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249881.

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

The square root of 25485618 is about 5048.3282381398. The cubic root of 25485618 is about 294.2829198438.

The spelling of 25485618 in words is "twenty-five million, four hundred eighty-five thousand, six hundred eighteen".