25213445 has 8 divisors (see below), whose sum is σ = 30400800. Its totient is φ = 20074320.

The previous prime is 25213427. The next prime is 25213453. The reversal of 25213445 is 54431252.

It is a happy number.

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

It is not a de Polignac number, because 25213445 - 2⁶ = 25213381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10895 + ... + 13004.

It is an arithmetic number, because the mean of its divisors is an integer number (3800100).

Almost surely, 2^25213445 is an apocalyptic number.

It is an amenable number.

25213445 is a deficient number, since it is larger than the sum of its proper divisors (5187355).

25213445 is a wasteful number, since it uses less digits than its factorization.

25213445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24115.

The product of its digits is 4800, while the sum is 26.

The square root of 25213445 is about 5021.2991346862. The cubic root of 25213445 is about 293.2315726854.

Adding to 25213445 its reverse (54431252), we get a palindrome (79644697).

The spelling of 25213445 in words is "twenty-five million, two hundred thirteen thousand, four hundred forty-five".