25340400541 has 4 divisors (see below), whose sum is σ = 25340973084. Its totient is φ = 25339828000.

The previous prime is 25340400539. The next prime is 25340400599. The reversal of 25340400541 is 14500404352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24158484900 + 1181915641 = 155430^2 + 34379^2 .

It is a cyclic number.

It is not a de Polignac number, because 25340400541 - 2¹ = 25340400539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340400341) 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, 213760 + ... + 310441.

It is an arithmetic number, because the mean of its divisors is an integer number (6335243271).

Almost surely, 2^25340400541 is an apocalyptic number.

It is an amenable number.

25340400541 is a deficient number, since it is larger than the sum of its proper divisors (572543).

25340400541 is an equidigital number, since it uses as much as digits as its factorization.

25340400541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572542.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25340400541 its reverse (14500404352), we get a palindrome (39840804893).

The spelling of 25340400541 in words is "twenty-five billion, three hundred forty million, four hundred thousand, five hundred forty-one".