25152621 has 16 divisors (see below), whose sum is σ = 36220800. Its totient is φ = 15433920.

The previous prime is 25152607. The next prime is 25152623. The reversal of 25152621 is 12625152.

It is a happy number.

It is not a de Polignac number, because 25152621 - 2⁷ = 25152493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25152591 and 25152600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25152623) 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 15 ways as a sum of consecutive naturals, for example, 17280 + ... + 18678.

It is an arithmetic number, because the mean of its divisors is an integer number (2263800).

Almost surely, 2^25152621 is an apocalyptic number.

It is an amenable number.

25152621 is a deficient number, since it is larger than the sum of its proper divisors (11068179).

25152621 is a wasteful number, since it uses less digits than its factorization.

25152621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its digits is 1200, while the sum is 24.

The square root of 25152621 is about 5015.2388776608. The cubic root of 25152621 is about 292.9955890882.

Adding to 25152621 its reverse (12625152), we get a palindrome (37777773).

The spelling of 25152621 in words is "twenty-five million, one hundred fifty-two thousand, six hundred twenty-one".