25356112530 has 64 divisors (see below), whose sum is σ = 69754763520. Its totient is φ = 5778468864.

The previous prime is 25356112513. The next prime is 25356112531. The reversal of 25356112530 is 3521165352.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25356112491 and 25356112500.

It is not an unprimeable number, because it can be changed into a prime (25356112531) 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 31 ways as a sum of consecutive naturals, for example, 108375 + ... + 249914.

It is an arithmetic number, because the mean of its divisors is an integer number (1089918180).

Almost surely, 2^25356112530 is an apocalyptic number.

25356112530 is an abundant number, since it is smaller than the sum of its proper divisors (44398650990).

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

25356112530 is a wasteful number, since it uses less digits than its factorization.

25356112530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358643.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 25356112530 its reverse (3521165352), we get a palindrome (28877277882).

The spelling of 25356112530 in words is "twenty-five billion, three hundred fifty-six million, one hundred twelve thousand, five hundred thirty".