25450001 has 2 divisors, whose sum is σ = 25450002. Its totient is φ = 25450000.

The previous prime is 25449997. The next prime is 25450013. The reversal of 25450001 is 10005452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13512976 + 11937025 = 3676^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 25450001 - 2² = 25449997 is a prime.

It is not a weakly prime, because it can be changed into another prime (25450031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12725000 + 12725001.

It is an arithmetic number, because the mean of its divisors is an integer number (12725001).

Almost surely, 2^25450001 is an apocalyptic number.

It is an amenable number.

25450001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25450001 is an equidigital number, since it uses as much as digits as its factorization.

25450001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 25450001 is about 5044.7994013637. The cubic root of 25450001 is about 294.1457658709.

Adding to 25450001 its reverse (10005452), we get a palindrome (35455453).

The spelling of 25450001 in words is "twenty-five million, four hundred fifty thousand, one".