25442959 has 4 divisors (see below), whose sum is σ = 25462080. Its totient is φ = 25423840.

The previous prime is 25442953. The next prime is 25442969. The reversal of 25442959 is 95924452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25442959 - 2⁵ = 25442927 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25442953) 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, 7402 + ... + 10279.

It is an arithmetic number, because the mean of its divisors is an integer number (6365520).

Almost surely, 2^25442959 is an apocalyptic number.

25442959 is a deficient number, since it is larger than the sum of its proper divisors (19121).

25442959 is a wasteful number, since it uses less digits than its factorization.

25442959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19120.

The product of its digits is 129600, while the sum is 40.

The square root of 25442959 is about 5044.1014065936. The cubic root of 25442959 is about 294.1186333826.

The spelling of 25442959 in words is "twenty-five million, four hundred forty-two thousand, nine hundred fifty-nine".