25833609425 has 12 divisors (see below), whose sum is σ = 34497805020. Its totient is φ = 19077126720.

The previous prime is 25833609379. The next prime is 25833609427. The reversal of 25833609425 is 52490633852.

It can be written as a sum of positive squares in 6 ways, for example, as 2083100881 + 23750508544 = 45641^2 + 154112^2 .

It is not a de Polignac number, because 25833609425 - 2¹⁶ = 25833543889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25833609425.

It is not an unprimeable number, because it can be changed into a prime (25833609427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39743690 + ... + 39744339.

It is an arithmetic number, because the mean of its divisors is an integer number (2874817085).

Almost surely, 2^25833609425 is an apocalyptic number.

25833609425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25833609425 is a deficient number, since it is larger than the sum of its proper divisors (8664195595).

25833609425 is a wasteful number, since it uses less digits than its factorization.

25833609425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79488052 (or 79488047 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 25833609425 in words is "twenty-five billion, eight hundred thirty-three million, six hundred nine thousand, four hundred twenty-five".