25214215 has 8 divisors (see below), whose sum is σ = 32584608. Its totient is φ = 18619680.

The previous prime is 25214209. The next prime is 25214219. The reversal of 25214215 is 51241252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25214215 - 2⁷ = 25214087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25214219) 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 7 ways as a sum of consecutive naturals, for example, 193891 + ... + 194020.

It is an arithmetic number, because the mean of its divisors is an integer number (4073076).

Almost surely, 2^25214215 is an apocalyptic number.

25214215 is a deficient number, since it is larger than the sum of its proper divisors (7370393).

25214215 is a wasteful number, since it uses less digits than its factorization.

25214215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387929.

The product of its digits is 800, while the sum is 22.

The square root of 25214215 is about 5021.3758074854. The cubic root of 25214215 is about 293.2345576803.

Adding to 25214215 its reverse (51241252), we get a palindrome (76455467).

The spelling of 25214215 in words is "twenty-five million, two hundred fourteen thousand, two hundred fifteen".