25904044059 has 4 divisors (see below), whose sum is σ = 34538725416. Its totient is φ = 17269362704.

The previous prime is 25904044057. The next prime is 25904044081. The reversal of 25904044059 is 95044040952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25904044059 - 2¹ = 25904044057 is a prime.

It is a super-2 number, since 2×25904044059² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25904044059.

It is not an unprimeable number, because it can be changed into a prime (25904044057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317340674 + ... + 4317340679.

It is an arithmetic number, because the mean of its divisors is an integer number (8634681354).

Almost surely, 2^25904044059 is an apocalyptic number.

25904044059 is a deficient number, since it is larger than the sum of its proper divisors (8634681357).

25904044059 is an equidigital number, since it uses as much as digits as its factorization.

25904044059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634681356.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 25904044059 in words is "twenty-five billion, nine hundred four million, forty-four thousand, fifty-nine".