25401867 has 16 divisors (see below), whose sum is σ = 35458560. Its totient is φ = 16144832.

The previous prime is 25401839. The next prime is 25401881. The reversal of 25401867 is 76810452.

It is a cyclic number.

It is not a de Polignac number, because 25401867 - 2⁸ = 25401611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25405867) 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 15 ways as a sum of consecutive naturals, for example, 38938 + ... + 39584.

It is an arithmetic number, because the mean of its divisors is an integer number (2216160).

Almost surely, 2^25401867 is an apocalyptic number.

25401867 is a deficient number, since it is larger than the sum of its proper divisors (10056693).

25401867 is a wasteful number, since it uses less digits than its factorization.

25401867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25401867 is about 5040.0264880256. The cubic root of 25401867 is about 293.9602079515.

The spelling of 25401867 in words is "twenty-five million, four hundred one thousand, eight hundred sixty-seven".