25415201 has 4 divisors (see below), whose sum is σ = 29045952. Its totient is φ = 21784452.

The previous prime is 25415197. The next prime is 25415209. The reversal of 25415201 is 10251452.

25415201 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25415201 - 2² = 25415197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25415209) 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 3 ways as a sum of consecutive naturals, for example, 1815365 + ... + 1815378.

It is an arithmetic number, because the mean of its divisors is an integer number (7261488).

Almost surely, 2^25415201 is an apocalyptic number.

It is an amenable number.

25415201 is a deficient number, since it is larger than the sum of its proper divisors (3630751).

25415201 is an equidigital number, since it uses as much as digits as its factorization.

25415201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630750.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25415201 is about 5041.3491249863. The cubic root of 25415201 is about 294.0116343522.

Adding to 25415201 its reverse (10251452), we get a palindrome (35666653).

The spelling of 25415201 in words is "twenty-five million, four hundred fifteen thousand, two hundred one".