25620355135 has 16 divisors (see below), whose sum is σ = 30919491072. Its totient is φ = 20379673600.

The previous prime is 25620355127. The next prime is 25620355153. The reversal of 25620355135 is 53155302652.

It is not a de Polignac number, because 25620355135 - 2³ = 25620355127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25620355094 and 25620355103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2727567 + ... + 2736943.

It is an arithmetic number, because the mean of its divisors is an integer number (1932468192).

Almost surely, 2^25620355135 is an apocalyptic number.

25620355135 is a deficient number, since it is larger than the sum of its proper divisors (5299135937).

25620355135 is a wasteful number, since it uses less digits than its factorization.

25620355135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 25620355135 its reverse (53155302652), we get a palindrome (78775657787).

The spelling of 25620355135 in words is "twenty-five billion, six hundred twenty million, three hundred fifty-five thousand, one hundred thirty-five".