25478007 has 8 divisors (see below), whose sum is σ = 34003200. Its totient is φ = 16969080.

The previous prime is 25478003. The next prime is 25478009. The reversal of 25478007 is 70087452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25478007 - 2² = 25478003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478003) 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 7 ways as a sum of consecutive naturals, for example, 244 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (4250400).

Almost surely, 2^25478007 is an apocalyptic number.

25478007 is a deficient number, since it is larger than the sum of its proper divisors (8525193).

25478007 is a wasteful number, since it uses less digits than its factorization.

25478007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 25478007 is about 5047.5743679514. The cubic root of 25478007 is about 294.2536221395.

The spelling of 25478007 in words is "twenty-five million, four hundred seventy-eight thousand, seven".