25606625430 has 32 divisors (see below), whose sum is σ = 61465850208. Its totient is φ = 6827328000.

The previous prime is 25606625423. The next prime is 25606625437. The reversal of 25606625430 is 3452660652.

It is an interprime number because it is at equal distance from previous prime (25606625423) and next prime (25606625437).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25606625437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128580 + ... + 260280.

It is an arithmetic number, because the mean of its divisors is an integer number (1920807819).

Almost surely, 2^25606625430 is an apocalyptic number.

25606625430 is an abundant number, since it is smaller than the sum of its proper divisors (35859224778).

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

25606625430 is a wasteful number, since it uses less digits than its factorization.

25606625430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138192.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 25606625430 in words is "twenty-five billion, six hundred six million, six hundred twenty-five thousand, four hundred thirty".