25631052454541 has 8 divisors (see below), whose sum is σ = 25734306486840. Its totient is φ = 25527825727488.

The previous prime is 25631052454531. The next prime is 25631052454543. The reversal of 25631052454541 is 14545425013652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11791566193225 + 13839486261316 = 3433885^2 + 3720146^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25631052454541 - 2⁶ = 25631052454477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25631052454543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4944116 + ... + 8700941.

It is an arithmetic number, because the mean of its divisors is an integer number (3216788310855).

Almost surely, 2^{25631052454541} is an apocalyptic number.

It is an amenable number.

25631052454541 is a deficient number, since it is larger than the sum of its proper divisors (103254032299).

25631052454541 is a wasteful number, since it uses less digits than its factorization.

25631052454541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652623.

The product of its (nonzero) digits is 2880000, while the sum is 47.

The spelling of 25631052454541 in words is "twenty-five trillion, six hundred thirty-one billion, fifty-two million, four hundred fifty-four thousand, five hundred forty-one".