25239652 has 6 divisors (see below), whose sum is σ = 44169398. Its totient is φ = 12619824.

The previous prime is 25239649. The next prime is 25239659. The reversal of 25239652 is 25693252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24860196 + 379456 = 4986^2 + 616^2 .

It is a super-2 number, since 2×25239652² = 1274080066162208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25239659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154953 + ... + 3154960.

Almost surely, 2^25239652 is an apocalyptic number.

It is an amenable number.

25239652 is a deficient number, since it is larger than the sum of its proper divisors (18929746).

25239652 is a wasteful number, since it uses less digits than its factorization.

25239652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309917 (or 6309915 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 25239652 is about 5023.9080405597. The cubic root of 25239652 is about 293.3331330348. Note that the first 3 decimals are identical.

The spelling of 25239652 in words is "twenty-five million, two hundred thirty-nine thousand, six hundred fifty-two".