25135810541 has 2 divisors, whose sum is σ = 25135810542. Its totient is φ = 25135810540.

The previous prime is 25135810501. The next prime is 25135810573. The reversal of 25135810541 is 14501853152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23131368100 + 2004442441 = 152090^2 + 44771^2 .

It is a cyclic number.

It is not a de Polignac number, because 25135810541 - 2¹⁸ = 25135548397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25135810501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567905270 + 12567905271.

It is an arithmetic number, because the mean of its divisors is an integer number (12567905271).

Almost surely, 2^25135810541 is an apocalyptic number.

It is an amenable number.

25135810541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135810541 is an equidigital number, since it uses as much as digits as its factorization.

25135810541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 25135810541 in words is "twenty-five billion, one hundred thirty-five million, eight hundred ten thousand, five hundred forty-one".