25553001 has 8 divisors (see below), whose sum is σ = 34422304. Its totient is φ = 16859520.

The previous prime is 25552999. The next prime is 25553027. The reversal of 25553001 is 10035552.

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

It is not a de Polignac number, because 25553001 - 2¹ = 25552999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25553071) 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, 43615 + ... + 44196.

It is an arithmetic number, because the mean of its divisors is an integer number (4302788).

Almost surely, 2^25553001 is an apocalyptic number.

It is an amenable number.

25553001 is a deficient number, since it is larger than the sum of its proper divisors (8869303).

25553001 is an equidigital number, since it uses as much as digits as its factorization.

25553001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87911.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 25553001 is about 5054.9976261122. The cubic root of 25553001 is about 294.5420491996.

Adding to 25553001 its reverse (10035552), we get a palindrome (35588553).

The spelling of 25553001 in words is "twenty-five million, five hundred fifty-three thousand, one".