25230445 has 4 divisors (see below), whose sum is σ = 30276540. Its totient is φ = 20184352.

The previous prime is 25230437. The next prime is 25230449. The reversal of 25230445 is 54403252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12938409 + 12292036 = 3597^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 25230445 - 2³ = 25230437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25230449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523040 + ... + 2523049.

It is an arithmetic number, because the mean of its divisors is an integer number (7569135).

Almost surely, 2^25230445 is an apocalyptic number.

It is an amenable number.

25230445 is a deficient number, since it is larger than the sum of its proper divisors (5046095).

25230445 is an equidigital number, since it uses as much as digits as its factorization.

25230445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046094.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25230445 is about 5022.9916384561. The cubic root of 25230445 is about 293.2974610345.

Adding to 25230445 its reverse (54403252), we get a palindrome (79633697).

The spelling of 25230445 in words is "twenty-five million, two hundred thirty thousand, four hundred forty-five".