25921827 has 12 divisors (see below), whose sum is σ = 38078040. Its totient is φ = 16987968.

The previous prime is 25921781. The next prime is 25921829. The reversal of 25921827 is 72812952.

It is not a de Polignac number, because 25921827 - 2¹⁰ = 25920803 is a prime.

It is a super-2 number, since 2×25921827² = 1343882230035858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25921791 and 25921800.

It is not an unprimeable number, because it can be changed into a prime (25921829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23878 + ... + 24939.

It is an arithmetic number, because the mean of its divisors is an integer number (3173170).

Almost surely, 2^25921827 is an apocalyptic number.

25921827 is a deficient number, since it is larger than the sum of its proper divisors (12156213).

25921827 is a wasteful number, since it uses less digits than its factorization.

25921827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48882 (or 48879 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 25921827 is about 5091.3482497272. The cubic root of 25921827 is about 295.9524021042.

The spelling of 25921827 in words is "twenty-five million, nine hundred twenty-one thousand, eight hundred twenty-seven".