25551201 has 16 divisors (see below), whose sum is σ = 37682624. Its totient is φ = 15297984.

The previous prime is 25551193. The next prime is 25551217. The reversal of 25551201 is 10215552.

It is not a de Polignac number, because 25551201 - 2³ = 25551193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25551271) 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 15 ways as a sum of consecutive naturals, for example, 7411 + ... + 10296.

It is an arithmetic number, because the mean of its divisors is an integer number (2355164).

Almost surely, 2^25551201 is an apocalyptic number.

It is an amenable number.

25551201 is a deficient number, since it is larger than the sum of its proper divisors (12131423).

25551201 is a wasteful number, since it uses less digits than its factorization.

25551201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17760.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25551201 is about 5054.8195813501. The cubic root of 25551201 is about 294.5351330108.

Adding to 25551201 its reverse (10215552), we get a palindrome (35766753).

It can be divided in two parts, 25551 and 201, that added together give a palindrome (25752).

The spelling of 25551201 in words is "twenty-five million, five hundred fifty-one thousand, two hundred one".