25970447 has 4 divisors (see below), whose sum is σ = 25981536. Its totient is φ = 25959360.

The previous prime is 25970431. The next prime is 25970459. The reversal of 25970447 is 74407952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25970447 - 2⁴ = 25970431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25970447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25970047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503 + ... + 7224.

It is an arithmetic number, because the mean of its divisors is an integer number (6495384).

Almost surely, 2^25970447 is an apocalyptic number.

25970447 is a deficient number, since it is larger than the sum of its proper divisors (11089).

25970447 is an equidigital number, since it uses as much as digits as its factorization.

25970447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 25970447 is about 5096.1207795734. The cubic root of 25970447 is about 296.1373198678.

The spelling of 25970447 in words is "twenty-five million, nine hundred seventy thousand, four hundred forty-seven".