25801401 has 4 divisors (see below), whose sum is σ = 34401872. Its totient is φ = 17200932.

The previous prime is 25801381. The next prime is 25801409. The reversal of 25801401 is 10410852.

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 not a de Polignac number, because 25801401 - 2⁶ = 25801337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25801409) 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, 4300231 + ... + 4300236.

It is an arithmetic number, because the mean of its divisors is an integer number (8600468).

Almost surely, 2^25801401 is an apocalyptic number.

It is an amenable number.

25801401 is a deficient number, since it is larger than the sum of its proper divisors (8600471).

25801401 is an equidigital number, since it uses as much as digits as its factorization.

25801401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8600470.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 25801401 is about 5079.5079486108. The cubic root of 25801401 is about 295.4933848342.

The spelling of 25801401 in words is "twenty-five million, eight hundred one thousand, four hundred one".