25287601 has 4 divisors (see below), whose sum is σ = 25358400. Its totient is φ = 25216804.

The previous prime is 25287593. The next prime is 25287637. The reversal of 25287601 is 10678252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25287601 - 2³ = 25287593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25287701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34861 + ... + 35578.

It is an arithmetic number, because the mean of its divisors is an integer number (6339600).

Almost surely, 2^25287601 is an apocalyptic number.

It is an amenable number.

25287601 is a deficient number, since it is larger than the sum of its proper divisors (70799).

25287601 is an equidigital number, since it uses as much as digits as its factorization.

25287601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70798.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 25287601 is about 5028.6778580458. The cubic root of 25287601 is about 293.5187686253.

The spelling of 25287601 in words is "twenty-five million, two hundred eighty-seven thousand, six hundred one".