25884961 has 4 divisors (see below), whose sum is σ = 26196912. Its totient is φ = 25573012.

The previous prime is 25884949. The next prime is 25885003. The reversal of 25884961 is 16948852.

It is a happy number.

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 25884961 - 2²¹ = 23787809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25584961) 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, 155851 + ... + 156016.

It is an arithmetic number, because the mean of its divisors is an integer number (6549228).

Almost surely, 2^25884961 is an apocalyptic number.

It is an amenable number.

25884961 is a deficient number, since it is larger than the sum of its proper divisors (311951).

25884961 is an equidigital number, since it uses as much as digits as its factorization.

25884961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311950.

The product of its digits is 138240, while the sum is 43.

The square root of 25884961 is about 5087.7265060143. The cubic root of 25884961 is about 295.8120344559.

The spelling of 25884961 in words is "twenty-five million, eight hundred eighty-four thousand, nine hundred sixty-one".