25606012434 has 16 divisors (see below), whose sum is σ = 52977957120. Its totient is φ = 8241015440.

The previous prime is 25606012433. The next prime is 25606012457. The reversal of 25606012434 is 43421060652.

It is a junction number, because it is equal to n+sod(n) for n = 25606012395 and 25606012404.

It is not an unprimeable number, because it can be changed into a prime (25606012433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73580322 + ... + 73580669.

It is an arithmetic number, because the mean of its divisors is an integer number (3311122320).

Almost surely, 2^25606012434 is an apocalyptic number.

25606012434 is an abundant number, since it is smaller than the sum of its proper divisors (27371944686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25606012434 is a wasteful number, since it uses less digits than its factorization.

25606012434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147161025.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 25606012434 in words is "twenty-five billion, six hundred six million, twelve thousand, four hundred thirty-four".