25511201 has 2 divisors, whose sum is σ = 25511202. Its totient is φ = 25511200.

The previous prime is 25511149. The next prime is 25511207. The reversal of 25511201 is 10211552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 6370576 = 4375^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 25511201 - 2¹⁴ = 25494817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25511201.

It is not a weakly prime, because it can be changed into another prime (25511207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755600 + 12755601.

It is an arithmetic number, because the mean of its divisors is an integer number (12755601).

Almost surely, 2^25511201 is an apocalyptic number.

It is an amenable number.

25511201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25511201 is an equidigital number, since it uses as much as digits as its factorization.

25511201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 25511201 is about 5050.8614116802. The cubic root of 25511201 is about 294.3813560443.

Adding to 25511201 its reverse (10211552), we get a palindrome (35722753).

The spelling of 25511201 in words is "twenty-five million, five hundred eleven thousand, two hundred one".