25541423461 has 2 divisors, whose sum is σ = 25541423462. Its totient is φ = 25541423460.

The previous prime is 25541423459. The next prime is 25541423471. The reversal of 25541423461 is 16432414552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24096663361 + 1444760100 = 155231^2 + 38010^2 .

It is a cyclic number.

It is not a de Polignac number, because 25541423461 - 2¹ = 25541423459 is a prime.

Together with 25541423459, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25541423461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25541423471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770711730 + 12770711731.

It is an arithmetic number, because the mean of its divisors is an integer number (12770711731).

Almost surely, 2^25541423461 is an apocalyptic number.

It is an amenable number.

25541423461 is a deficient number, since it is larger than the sum of its proper divisors (1).

25541423461 is an equidigital number, since it uses as much as digits as its factorization.

25541423461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 37.

The spelling of 25541423461 in words is "twenty-five billion, five hundred forty-one million, four hundred twenty-three thousand, four hundred sixty-one".