25501516351 has 2 divisors, whose sum is σ = 25501516352. Its totient is φ = 25501516350.

The previous prime is 25501516319. The next prime is 25501516427. The reversal of 25501516351 is 15361510552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25501516351 - 2⁵ = 25501516319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25501516151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750758175 + 12750758176.

It is an arithmetic number, because the mean of its divisors is an integer number (12750758176).

Almost surely, 2^25501516351 is an apocalyptic number.

25501516351 is a deficient number, since it is larger than the sum of its proper divisors (1).

25501516351 is an equidigital number, since it uses as much as digits as its factorization.

25501516351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 25501516351 in words is "twenty-five billion, five hundred one million, five hundred sixteen thousand, three hundred fifty-one".