25554204541 has 2 divisors, whose sum is σ = 25554204542. Its totient is φ = 25554204540.

The previous prime is 25554204523. The next prime is 25554204629. The reversal of 25554204541 is 14540245552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24967160100 + 587044441 = 158010^2 + 24229^2 .

It is a cyclic number.

It is not a de Polignac number, because 25554204541 - 2⁵ = 25554204509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25554204541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25554204941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777102270 + 12777102271.

It is an arithmetic number, because the mean of its divisors is an integer number (12777102271).

Almost surely, 2^25554204541 is an apocalyptic number.

It is an amenable number.

25554204541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25554204541 is an equidigital number, since it uses as much as digits as its factorization.

25554204541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160000, while the sum is 37.

The spelling of 25554204541 in words is "twenty-five billion, five hundred fifty-four million, two hundred four thousand, five hundred forty-one".