25413242536 has 64 divisors (see below), whose sum is σ = 53136000000. Its totient is φ = 11295399360.

The previous prime is 25413242471. The next prime is 25413242549. The reversal of 25413242536 is 63524231452.

It is a super-2 number, since 2×25413242536² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25413242495 and 25413242504.

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, 6197815 + ... + 6201913.

It is an arithmetic number, because the mean of its divisors is an integer number (830250000).

Almost surely, 2^25413242536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25413242536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26568000000).

25413242536 is an abundant number, since it is smaller than the sum of its proper divisors (27722757464).

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

25413242536 is a wasteful number, since it uses less digits than its factorization.

25413242536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662 (or 5658 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

Adding to 25413242536 its reverse (63524231452), we get a palindrome (88937473988).

The spelling of 25413242536 in words is "twenty-five billion, four hundred thirteen million, two hundred forty-two thousand, five hundred thirty-six".