25654001 has 2 divisors, whose sum is σ = 25654002. Its totient is φ = 25654000.

The previous prime is 25653989. The next prime is 25654033. The reversal of 25654001 is 10045652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17808400 + 7845601 = 4220^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 25654001 - 2⁶ = 25653937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25654091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827000 + 12827001.

It is an arithmetic number, because the mean of its divisors is an integer number (12827001).

Almost surely, 2^25654001 is an apocalyptic number.

It is an amenable number.

25654001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25654001 is an equidigital number, since it uses as much as digits as its factorization.

25654001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25654001 is about 5064.9778874147. The cubic root of 25654001 is about 294.9296049594.

Adding to 25654001 its reverse (10045652), we get a palindrome (35699653).

The spelling of 25654001 in words is "twenty-five million, six hundred fifty-four thousand, one".