25851318007 has 2 divisors, whose sum is σ = 25851318008. Its totient is φ = 25851318006.

The previous prime is 25851317993. The next prime is 25851318019. The reversal of 25851318007 is 70081315852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25851318007 - 2³¹ = 23703834359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25851318037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925659003 + 12925659004.

It is an arithmetic number, because the mean of its divisors is an integer number (12925659004).

Almost surely, 2^25851318007 is an apocalyptic number.

25851318007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25851318007 is an equidigital number, since it uses as much as digits as its factorization.

25851318007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 25851318007 in words is "twenty-five billion, eight hundred fifty-one million, three hundred eighteen thousand, seven".