25023213 has 6 divisors (see below), whose sum is σ = 36144654. Its totient is φ = 16682136.

The previous prime is 25023199. The next prime is 25023217. The reversal of 25023213 is 31232052.

It can be written as a sum of positive squares in only one way, i.e., 23068809 + 1954404 = 4803^2 + 1398^2 .

It is not a de Polignac number, because 25023213 - 2¹³ = 25015021 is a prime.

It is a super-2 number, since 2×25023213² = 1252322377686738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25023217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1390170 + ... + 1390187.

It is an arithmetic number, because the mean of its divisors is an integer number (6024109).

Almost surely, 2^25023213 is an apocalyptic number.

It is an amenable number.

25023213 is a deficient number, since it is larger than the sum of its proper divisors (11121441).

25023213 is a wasteful number, since it uses less digits than its factorization.

25023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780363 (or 2780360 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 25023213 is about 5002.3207614066. The cubic root of 25023213 is about 292.4922461236.

Adding to 25023213 its reverse (31232052), we get a palindrome (56255265).

The spelling of 25023213 in words is "twenty-five million, twenty-three thousand, two hundred thirteen".