25531201 has 2 divisors, whose sum is σ = 25531202. Its totient is φ = 25531200.

The previous prime is 25531189. The next prime is 25531217. The reversal of 25531201 is 10213552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 1324801 = 4920^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 25531201 - 2⁵ = 25531169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25531241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765600 + 12765601.

It is an arithmetic number, because the mean of its divisors is an integer number (12765601).

Almost surely, 2^25531201 is an apocalyptic number.

It is an amenable number.

25531201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25531201 is an equidigital number, since it uses as much as digits as its factorization.

25531201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25531201 is about 5052.8408840968. The cubic root of 25531201 is about 294.4582646045.

Adding to 25531201 its reverse (10213552), we get a palindrome (35744753).

The spelling of 25531201 in words is "twenty-five million, five hundred thirty-one thousand, two hundred one".