25380381 has 8 divisors (see below), whose sum is σ = 36443680. Its totient is φ = 15618672.

The previous prime is 25380361. The next prime is 25380389. The reversal of 25380381 is 18308352.

It is a happy number.

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

It is not a de Polignac number, because 25380381 - 2⁵ = 25380349 is a prime.

It is a super-2 number, since 2×25380381² = 1288327479410322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25380389) 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, 325351 + ... + 325428.

It is an arithmetic number, because the mean of its divisors is an integer number (4555460).

Almost surely, 2^25380381 is an apocalyptic number.

It is an amenable number.

25380381 is a deficient number, since it is larger than the sum of its proper divisors (11063299).

25380381 is a wasteful number, since it uses less digits than its factorization.

25380381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650795.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25380381 is about 5037.8945006818. The cubic root of 25380381 is about 293.8773031444.

The spelling of 25380381 in words is "twenty-five million, three hundred eighty thousand, three hundred eighty-one".