25238871 has 30 divisors (see below), whose sum is σ = 43864920. Its totient is φ = 14419944.

The previous prime is 25238869. The next prime is 25238879. The reversal of 25238871 is 17883252.

It is not a de Polignac number, because 25238871 - 2¹ = 25238869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25238879) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 790 + ... + 7148.

It is an arithmetic number, because the mean of its divisors is an integer number (1462164).

Almost surely, 2^25238871 is an apocalyptic number.

25238871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25238871 is a deficient number, since it is larger than the sum of its proper divisors (18626049).

25238871 is an equidigital number, since it uses as much as digits as its factorization.

25238871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6369 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 25238871 is about 5023.8303116248. The cubic root of 25238871 is about 293.3301074312.

The spelling of 25238871 in words is "twenty-five million, two hundred thirty-eight thousand, eight hundred seventy-one".