25259112606 has 96 divisors (see below), whose sum is σ = 63998514720. Its totient is φ = 6586804224.

The previous prime is 25259112577. The next prime is 25259112649. The reversal of 25259112606 is 60621195252.

It is a super-2 number, since 2×25259112606² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303030 + ... + 377286.

It is an arithmetic number, because the mean of its divisors is an integer number (666651195).

Almost surely, 2^25259112606 is an apocalyptic number.

25259112606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25259112606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31999257360).

25259112606 is an abundant number, since it is smaller than the sum of its proper divisors (38739402114).

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

25259112606 is a wasteful number, since it uses less digits than its factorization.

25259112606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74378 (or 74371 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 25259112606 in words is "twenty-five billion, two hundred fifty-nine million, one hundred twelve thousand, six hundred six".