25345381 has 4 divisors (see below), whose sum is σ = 25692652. Its totient is φ = 24998112.

The previous prime is 25345349. The next prime is 25345393. The reversal of 25345381 is 18354352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14062500 + 11282881 = 3750^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 25345381 - 2⁵ = 25345349 is a prime.

It is a super-2 number, since 2×25345381² = 1284776676070322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345081) 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 3 ways as a sum of consecutive naturals, for example, 173526 + ... + 173671.

It is an arithmetic number, because the mean of its divisors is an integer number (6423163).

Almost surely, 2^25345381 is an apocalyptic number.

It is an amenable number.

25345381 is a deficient number, since it is larger than the sum of its proper divisors (347271).

25345381 is an equidigital number, since it uses as much as digits as its factorization.

25345381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347270.

The product of its digits is 14400, while the sum is 31.

The square root of 25345381 is about 5034.4196289145. The cubic root of 25345381 is about 293.7421536459.

The spelling of 25345381 in words is "twenty-five million, three hundred forty-five thousand, three hundred eighty-one".