25836912654 has 128 divisors (see below), whose sum is σ = 61455532032. Its totient is φ = 7089413760.

The previous prime is 25836912649. The next prime is 25836912659. The reversal of 25836912654 is 45621963852.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25836912649) and next prime (25836912659).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25836912597 and 25836912606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25836912659) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28485669 + ... + 28486575.

It is an arithmetic number, because the mean of its divisors is an integer number (480121344).

Almost surely, 2^25836912654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25836912654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30727766016).

25836912654 is an abundant number, since it is smaller than the sum of its proper divisors (35618619378).

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

25836912654 is a wasteful number, since it uses less digits than its factorization.

25836912654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its digits is 3110400, while the sum is 51.

The spelling of 25836912654 in words is "twenty-five billion, eight hundred thirty-six million, nine hundred twelve thousand, six hundred fifty-four".