25396381 has 8 divisors (see below), whose sum is σ = 25968600. Its totient is φ = 24827712.

The previous prime is 25396363. The next prime is 25396387. The reversal of 25396381 is 18369352.

25396381 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 4 ways, for example, as 17222500 + 8173881 = 4150^2 + 2859^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25396381 - 2⁷ = 25396253 is a prime.

It is a super-2 number, since 2×25396381² = 1289952335794322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25396381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25396387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17811 + ... + 19183.

It is an arithmetic number, because the mean of its divisors is an integer number (3246075).

Almost surely, 2^25396381 is an apocalyptic number.

It is an amenable number.

25396381 is a deficient number, since it is larger than the sum of its proper divisors (572219).

25396381 is a wasteful number, since it uses less digits than its factorization.

25396381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775.

The product of its digits is 38880, while the sum is 37.

The square root of 25396381 is about 5039.4822154662. The cubic root of 25396381 is about 293.9390443915.

The spelling of 25396381 in words is "twenty-five million, three hundred ninety-six thousand, three hundred eighty-one".