25409100138 has 8 divisors (see below), whose sum is σ = 50818200288. Its totient is φ = 8469700044.

The previous prime is 25409100137. The next prime is 25409100161. The reversal of 25409100138 is 83100190452.

It is a sphenic number, since it is the product of 3 distinct primes.

25409100138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25409100099 and 25409100108.

It is not an unprimeable number, because it can be changed into a prime (25409100137) 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, 2117425006 + ... + 2117425017.

It is an arithmetic number, because the mean of its divisors is an integer number (6352275036).

Almost surely, 2^25409100138 is an apocalyptic number.

25409100138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25409100138 is a wasteful number, since it uses less digits than its factorization.

25409100138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234850028.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 25409100138 in words is "twenty-five billion, four hundred nine million, one hundred thousand, one hundred thirty-eight".