25521126 has 16 divisors (see below), whose sum is σ = 51093504. Its totient is φ = 8498504.

The previous prime is 25521113. The next prime is 25521127. The reversal of 25521126 is 62112552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25521096 and 25521105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25521127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8155 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (3193344).

Almost surely, 2^25521126 is an apocalyptic number.

25521126 is an abundant number, since it is smaller than the sum of its proper divisors (25572378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25521126 is a wasteful number, since it uses less digits than its factorization.

25521126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275.

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

The square root of 25521126 is about 5051.8438218140. The cubic root of 25521126 is about 294.4195269396.

Adding to 25521126 its reverse (62112552), we get a palindrome (87633678).

The spelling of 25521126 in words is "twenty-five million, five hundred twenty-one thousand, one hundred twenty-six".