25001213 has 4 divisors (see below), whose sum is σ = 25472988. Its totient is φ = 24529440.

The previous prime is 25001201. The next prime is 25001231. The reversal of 25001213 is 31210052.

It is a happy number.

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 16345849 + 8655364 = 4043^2 + 2942^2 .

It is a cyclic number.

It is not a de Polignac number, because 25001213 - 2⁶ = 25001149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235808 + ... + 235913.

It is an arithmetic number, because the mean of its divisors is an integer number (6368247).

Almost surely, 2^25001213 is an apocalyptic number.

It is an amenable number.

25001213 is a deficient number, since it is larger than the sum of its proper divisors (471775).

25001213 is an equidigital number, since it uses as much as digits as its factorization.

25001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471774.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 25001213 is about 5000.1212985287. The cubic root of 25001213 is about 292.4065028562.

Adding to 25001213 its reverse (31210052), we get a palindrome (56211265).

The spelling of 25001213 in words is "twenty-five million, one thousand, two hundred thirteen".