25606125436 has 24 divisors (see below), whose sum is σ = 45008354160. Its totient is φ = 12746640000.

The previous prime is 25606125421. The next prime is 25606125437. The reversal of 25606125436 is 63452160652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25606125437) 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, 3471160 + ... + 3478528.

It is an arithmetic number, because the mean of its divisors is an integer number (1875348090).

Almost surely, 2^25606125436 is an apocalyptic number.

It is an amenable number.

25606125436 is a deficient number, since it is larger than the sum of its proper divisors (19402228724).

25606125436 is a wasteful number, since it uses less digits than its factorization.

25606125436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085 (or 11083 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 25606125436 in words is "twenty-five billion, six hundred six million, one hundred twenty-five thousand, four hundred thirty-six".