25981413 has 8 divisors (see below), whose sum is σ = 35486976. Its totient is φ = 16898400.

The previous prime is 25981411. The next prime is 25981427. The reversal of 25981413 is 31418952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25981413 - 2¹ = 25981411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25981411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105493 + ... + 105738.

It is an arithmetic number, because the mean of its divisors is an integer number (4435872).

Almost surely, 2^25981413 is an apocalyptic number.

It is an amenable number.

25981413 is a deficient number, since it is larger than the sum of its proper divisors (9505563).

25981413 is a wasteful number, since it uses less digits than its factorization.

25981413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211275.

The product of its digits is 8640, while the sum is 33.

The square root of 25981413 is about 5097.1965824363. The cubic root of 25981413 is about 296.1789952496.

The spelling of 25981413 in words is "twenty-five million, nine hundred eighty-one thousand, four hundred thirteen".