25235279905 has 32 divisors (see below), whose sum is σ = 33221155968. Its totient is φ = 18249907200.

The previous prime is 25235279831. The next prime is 25235279929. The reversal of 25235279905 is 50997253252.

It is not a de Polignac number, because 25235279905 - 2²¹ = 25233182753 is a prime.

It is a super-3 number, since 3×25235279905³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15414747 + ... + 15416383.

It is an arithmetic number, because the mean of its divisors is an integer number (1038161124).

Almost surely, 2^25235279905 is an apocalyptic number.

It is an amenable number.

25235279905 is a deficient number, since it is larger than the sum of its proper divisors (7985876063).

25235279905 is a wasteful number, since it uses less digits than its factorization.

25235279905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 25235279905 in words is "twenty-five billion, two hundred thirty-five million, two hundred seventy-nine thousand, nine hundred five".