25872122 has 8 divisors (see below), whose sum is σ = 39244500. Its totient is φ = 12790624.

The previous prime is 25872101. The next prime is 25872127. The reversal of 25872122 is 22127852.

It can be written as a sum of positive squares in 2 ways, for example, as 24019801 + 1852321 = 4901^2 + 1361^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25872127) 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, 72497 + ... + 72852.

Almost surely, 2^25872122 is an apocalyptic number.

25872122 is a deficient number, since it is larger than the sum of its proper divisors (13372378).

25872122 is a wasteful number, since it uses less digits than its factorization.

25872122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145440.

The product of its digits is 4480, while the sum is 29.

The square root of 25872122 is about 5086.4645875107. The cubic root of 25872122 is about 295.7631185518.

Adding to 25872122 its reverse (22127852), we get a palindrome (47999974).

The spelling of 25872122 in words is "twenty-five million, eight hundred seventy-two thousand, one hundred twenty-two".