25445868 has 24 divisors (see below), whose sum is σ = 67855872. Its totient is φ = 7270224.

The previous prime is 25445867. The next prime is 25445869. The reversal of 25445868 is 86854452.

It is an interprime number because it is at equal distance from previous prime (25445867) and next prime (25445869).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25445867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151380 + ... + 151547.

It is an arithmetic number, because the mean of its divisors is an integer number (2827328).

Almost surely, 2^25445868 is an apocalyptic number.

25445868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25445868 is an abundant number, since it is smaller than the sum of its proper divisors (42410004).

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

25445868 is a wasteful number, since it uses less digits than its factorization.

25445868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302941 (or 302939 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 25445868 is about 5044.3897549654. The cubic root of 25445868 is about 294.1298422269.

The spelling of 25445868 in words is "twenty-five million, four hundred forty-five thousand, eight hundred sixty-eight".