25525801 has 8 divisors (see below), whose sum is σ = 29251584. Its totient is φ = 21819840.

The previous prime is 25525793. The next prime is 25525811. The reversal of 25525801 is 10852552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25525801 - 2³ = 25525793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25525801.

It is not an unprimeable number, because it can be changed into a prime (25525811) 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 7 ways as a sum of consecutive naturals, for example, 2080 + ... + 7441.

It is an arithmetic number, because the mean of its divisors is an integer number (3656448).

Almost surely, 2^25525801 is an apocalyptic number.

It is an amenable number.

25525801 is a deficient number, since it is larger than the sum of its proper divisors (3725783).

25525801 is an equidigital number, since it uses as much as digits as its factorization.

25525801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9911.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 25525801 is about 5052.3065029747. The cubic root of 25525801 is about 294.4375032526.

The spelling of 25525801 in words is "twenty-five million, five hundred twenty-five thousand, eight hundred one".