25443213 has 16 divisors (see below), whose sum is σ = 34575552. Its totient is φ = 16640000.

The previous prime is 25443199. The next prime is 25443217. The reversal of 25443213 is 31234452.

It is a cyclic number.

It is not a de Polignac number, because 25443213 - 2⁶ = 25443149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25443217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39373 + ... + 40013.

It is an arithmetic number, because the mean of its divisors is an integer number (2160972).

Almost surely, 2^25443213 is an apocalyptic number.

It is an amenable number.

25443213 is a deficient number, since it is larger than the sum of its proper divisors (9132339).

25443213 is a wasteful number, since it uses less digits than its factorization.

25443213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its digits is 2880, while the sum is 24.

The square root of 25443213 is about 5044.1265844544. The cubic root of 25443213 is about 294.1196121194.

Adding to 25443213 its reverse (31234452), we get a palindrome (56677665).

The spelling of 25443213 in words is "twenty-five million, four hundred forty-three thousand, two hundred thirteen".