25456849 has 4 divisors (see below), whose sum is σ = 27771120. Its totient is φ = 23142580.

The previous prime is 25456829. The next prime is 25456853. The reversal of 25456849 is 94865452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25456849 - 2⁷ = 25456721 is a prime.

It is a super-2 number, since 2×25456849² = 1296102322017602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25456829) 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, 1157119 + ... + 1157140.

It is an arithmetic number, because the mean of its divisors is an integer number (6942780).

Almost surely, 2^25456849 is an apocalyptic number.

It is an amenable number.

25456849 is a deficient number, since it is larger than the sum of its proper divisors (2314271).

25456849 is a wasteful number, since it uses less digits than its factorization.

25456849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314270.

The product of its digits is 345600, while the sum is 43.

The square root of 25456849 is about 5045.4780744742. The cubic root of 25456849 is about 294.1721460868.

The spelling of 25456849 in words is "twenty-five million, four hundred fifty-six thousand, eight hundred forty-nine".