25706240434 has 32 divisors (see below), whose sum is σ = 45498249216. Its totient is φ = 10663591680.

The previous prime is 25706240431. The next prime is 25706240449. The reversal of 25706240434 is 43404260752.

It is a junction number, because it is equal to n+sod(n) for n = 25706240393 and 25706240402.

It is not an unprimeable number, because it can be changed into a prime (25706240431) 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, 103419 + ... + 249214.

It is an arithmetic number, because the mean of its divisors is an integer number (1421820288).

Almost surely, 2^25706240434 is an apocalyptic number.

25706240434 is a deficient number, since it is larger than the sum of its proper divisors (19792008782).

25706240434 is a wasteful number, since it uses less digits than its factorization.

25706240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352810.

The product of its (nonzero) digits is 161280, while the sum is 37.

The spelling of 25706240434 in words is "twenty-five billion, seven hundred six million, two hundred forty thousand, four hundred thirty-four".