25878207 has 12 divisors (see below), whose sum is σ = 35467656. Its totient is φ = 16783200.

The previous prime is 25878173. The next prime is 25878221. The reversal of 25878207 is 70287852.

It is not a de Polignac number, because 25878207 - 2⁶ = 25878143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25878287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 7257.

It is an arithmetic number, because the mean of its divisors is an integer number (2955638).

Almost surely, 2^25878207 is an apocalyptic number.

25878207 is a deficient number, since it is larger than the sum of its proper divisors (9589449).

25878207 is an equidigital number, since it uses as much as digits as its factorization.

25878207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378 (or 6341 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 25878207 is about 5087.0627084792. The cubic root of 25878207 is about 295.7863040936.

The spelling of 25878207 in words is "twenty-five million, eight hundred seventy-eight thousand, two hundred seven".