25504541 has 2 divisors, whose sum is σ = 25504542. Its totient is φ = 25504540.

The previous prime is 25504519. The next prime is 25504613. The reversal of 25504541 is 14540552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15832441 + 9672100 = 3979^2 + 3110^2 .

It is a cyclic number.

It is not a de Polignac number, because 25504541 - 2⁶ = 25504477 is a prime.

It is a super-2 number, since 2×25504541² = 1300963223241362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25504541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25504511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752270 + 12752271.

It is an arithmetic number, because the mean of its divisors is an integer number (12752271).

Almost surely, 2^25504541 is an apocalyptic number.

It is an amenable number.

25504541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25504541 is an equidigital number, since it uses as much as digits as its factorization.

25504541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 25504541 is about 5050.2020751649. The cubic root of 25504541 is about 294.3557365727.

The spelling of 25504541 in words is "twenty-five million, five hundred four thousand, five hundred forty-one".