25252138 has 4 divisors (see below), whose sum is σ = 37878210. Its totient is φ = 12626068.

The previous prime is 25252133. The next prime is 25252147. The reversal of 25252138 is 83125252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25230529 + 21609 = 5023^2 + 147^2 .

It is not an unprimeable number, because it can be changed into a prime (25252133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313033 + ... + 6313036.

Almost surely, 2^25252138 is an apocalyptic number.

25252138 is a deficient number, since it is larger than the sum of its proper divisors (12626072).

25252138 is a wasteful number, since it uses less digits than its factorization.

25252138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12626071.

The product of its digits is 4800, while the sum is 28.

The square root of 25252138 is about 5025.1505450086. The cubic root of 25252138 is about 293.3814954780.

The spelling of 25252138 in words is "twenty-five million, two hundred fifty-two thousand, one hundred thirty-eight".