25212143 has 8 divisors (see below), whose sum is σ = 27788880. Its totient is φ = 22682880.

The previous prime is 25212137. The next prime is 25212149. The reversal of 25212143 is 34121252.

It is an interprime number because it is at equal distance from previous prime (25212137) and next prime (25212149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25212143 - 2¹⁴ = 25195759 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212149) 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 7 ways as a sum of consecutive naturals, for example, 10748 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (3473610).

Almost surely, 2^25212143 is an apocalyptic number.

25212143 is a deficient number, since it is larger than the sum of its proper divisors (2576737).

25212143 is a wasteful number, since it uses less digits than its factorization.

25212143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23737.

The product of its digits is 480, while the sum is 20.

The square root of 25212143 is about 5021.1694852893. The cubic root of 25212143 is about 293.2265251922.

Adding to 25212143 its reverse (34121252), we get a palindrome (59333395).

It can be divided in two parts, 2521 and 2143, that added together give a palindrome (4664).

The spelling of 25212143 in words is "twenty-five million, two hundred twelve thousand, one hundred forty-three".