25213789 has 8 divisors (see below), whose sum is σ = 26379000. Its totient is φ = 24068352.

The previous prime is 25213787. The next prime is 25213831. The reversal of 25213789 is 98731252.

It can be written as a sum of positive squares in 4 ways, for example, as 632025 + 24581764 = 795^2 + 4958^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25213789 - 2¹ = 25213787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25213787) 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, 2304 + ... + 7465.

It is an arithmetic number, because the mean of its divisors is an integer number (3297375).

Almost surely, 2^25213789 is an apocalyptic number.

25213789 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25213789 is a deficient number, since it is larger than the sum of its proper divisors (1165211).

25213789 is an equidigital number, since it uses as much as digits as its factorization.

25213789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887.

The product of its digits is 30240, while the sum is 37.

The square root of 25213789 is about 5021.3333886529. Note that the first 4 decimals coincide. The cubic root of 25213789 is about 293.2329062491.

It can be divided in two parts, 252 and 13789, that added together give a palindrome (14041).

The spelling of 25213789 in words is "twenty-five million, two hundred thirteen thousand, seven hundred eighty-nine".