25512100051 has 2 divisors, whose sum is σ = 25512100052. Its totient is φ = 25512100050.

The previous prime is 25512100037. The next prime is 25512100069. The reversal of 25512100051 is 15000121552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25512100051 - 2⁷ = 25512099923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25512099995 and 25512100031.

It is not a weakly prime, because it can be changed into another prime (25512100351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756050025 + 12756050026.

It is an arithmetic number, because the mean of its divisors is an integer number (12756050026).

Almost surely, 2^25512100051 is an apocalyptic number.

25512100051 is a deficient number, since it is larger than the sum of its proper divisors (1).

25512100051 is an equidigital number, since it uses as much as digits as its factorization.

25512100051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500, while the sum is 22.

The spelling of 25512100051 in words is "twenty-five billion, five hundred twelve million, one hundred thousand, fifty-one".