25212305 has 8 divisors (see below), whose sum is σ = 30408000. Its totient is φ = 20067696.

The previous prime is 25212289. The next prime is 25212307. The reversal of 25212305 is 50321252.

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

It is a cyclic number.

It is not a de Polignac number, because 25212305 - 2⁴ = 25212289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25212307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11675 + ... + 13664.

It is an arithmetic number, because the mean of its divisors is an integer number (3801000).

Almost surely, 2^25212305 is an apocalyptic number.

It is an amenable number.

25212305 is a deficient number, since it is larger than the sum of its proper divisors (5195695).

25212305 is a wasteful number, since it uses less digits than its factorization.

25212305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25543.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25212305 is about 5021.1856169634. The cubic root of 25212305 is about 293.2271532307.

Adding to 25212305 its reverse (50321252), we get a palindrome (75533557).

The spelling of 25212305 in words is "twenty-five million, two hundred twelve thousand, three hundred five".