25611050507 has 16 divisors (see below), whose sum is σ = 29757470400. Its totient is φ = 21586746240.

The previous prime is 25611050483. The next prime is 25611050537. The reversal of 25611050507 is 70505011652.

It is a cyclic number.

It is not a de Polignac number, because 25611050507 - 2¹⁰ = 25611049483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25611050537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2654969 + ... + 2664597.

It is an arithmetic number, because the mean of its divisors is an integer number (1859841900).

Almost surely, 2^25611050507 is an apocalyptic number.

25611050507 is a deficient number, since it is larger than the sum of its proper divisors (4146419893).

25611050507 is an equidigital number, since it uses as much as digits as its factorization.

25611050507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15926.

The product of its (nonzero) digits is 10500, while the sum is 32.

The spelling of 25611050507 in words is "twenty-five billion, six hundred eleven million, fifty thousand, five hundred seven".