25920007 has 2 divisors, whose sum is σ = 25920008. Its totient is φ = 25920006.

The previous prime is 25919977. The next prime is 25920031. The reversal of 25920007 is 70002952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25920007 - 2⁷ = 25919879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25920107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12960003 + 12960004.

It is an arithmetic number, because the mean of its divisors is an integer number (12960004).

Almost surely, 2^25920007 is an apocalyptic number.

25920007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25920007 is an equidigital number, since it uses as much as digits as its factorization.

25920007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 25920007 is about 5091.1695120080. The cubic root of 25920007 is about 295.9454755608.

Adding to 25920007 its reverse (70002952), we get a palindrome (95922959).

The spelling of 25920007 in words is "twenty-five million, nine hundred twenty thousand, seven".