25293381 has 4 divisors (see below), whose sum is σ = 33724512. Its totient is φ = 16862252.

The previous prime is 25293377. The next prime is 25293383. The reversal of 25293381 is 18339252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25293381 - 2² = 25293377 is a prime.

It is a super-2 number, since 2×25293381² = 1279510244822322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25293383) 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 3 ways as a sum of consecutive naturals, for example, 4215561 + ... + 4215566.

It is an arithmetic number, because the mean of its divisors is an integer number (8431128).

Almost surely, 2^25293381 is an apocalyptic number.

It is an amenable number.

25293381 is a deficient number, since it is larger than the sum of its proper divisors (8431131).

25293381 is an equidigital number, since it uses as much as digits as its factorization.

25293381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431130.

The product of its digits is 12960, while the sum is 33.

The square root of 25293381 is about 5029.2525289550. The cubic root of 25293381 is about 293.5411301670.

The spelling of 25293381 in words is "twenty-five million, two hundred ninety-three thousand, three hundred eighty-one".