25401005 has 16 divisors (see below), whose sum is σ = 36670080. Its totient is φ = 16500672.

The previous prime is 25401001. The next prime is 25401011. The reversal of 25401005 is 50010452.

It is a cyclic number.

It is not a de Polignac number, because 25401005 - 2² = 25401001 is a prime.

It is a super-2 number, since 2×25401005² = 1290422110020050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401001) 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 15 ways as a sum of consecutive naturals, for example, 18434 + ... + 19763.

It is an arithmetic number, because the mean of its divisors is an integer number (2291880).

Almost surely, 2^25401005 is an apocalyptic number.

It is an amenable number.

25401005 is a deficient number, since it is larger than the sum of its proper divisors (11269075).

25401005 is a wasteful number, since it uses less digits than its factorization.

25401005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38228.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 25401005 is about 5039.9409718766. The cubic root of 25401005 is about 293.9568827817.

Adding to 25401005 its reverse (50010452), we get a palindrome (75411457).

The spelling of 25401005 in words is "twenty-five million, four hundred one thousand, five".