25538522 has 8 divisors (see below), whose sum is σ = 40561236. Its totient is φ = 12018112.

The previous prime is 25538521. The next prime is 25538537. The reversal of 25538522 is 22583552.

It can be written as a sum of positive squares in 2 ways, for example, as 25512601 + 25921 = 5051^2 + 161^2 .

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

It is a super-2 number, since 2×25538522² = 1304432211888968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25538521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375533 + ... + 375600.

Almost surely, 2^25538522 is an apocalyptic number.

25538522 is a deficient number, since it is larger than the sum of its proper divisors (15022714).

25538522 is a wasteful number, since it uses less digits than its factorization.

25538522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751152.

The product of its digits is 24000, while the sum is 32.

The square root of 25538522 is about 5053.5652761194. The cubic root of 25538522 is about 294.4864069409.

The spelling of 25538522 in words is "twenty-five million, five hundred thirty-eight thousand, five hundred twenty-two".