25450213 has 4 divisors (see below), whose sum is σ = 26556768. Its totient is φ = 24343660.

The previous prime is 25450211. The next prime is 25450219. The reversal of 25450213 is 31205452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25450213 - 2¹ = 25450211 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25450211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553243 + ... + 553288.

It is an arithmetic number, because the mean of its divisors is an integer number (6639192).

Almost surely, 2^25450213 is an apocalyptic number.

25450213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25450213 is a deficient number, since it is larger than the sum of its proper divisors (1106555).

25450213 is a wasteful number, since it uses less digits than its factorization.

25450213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106554.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25450213 is about 5044.8204130573. The cubic root of 25450213 is about 294.1465826191.

Adding to 25450213 its reverse (31205452), we get a palindrome (56655665).

The spelling of 25450213 in words is "twenty-five million, four hundred fifty thousand, two hundred thirteen".