25591541 has 2 divisors, whose sum is σ = 25591542. Its totient is φ = 25591540.

The previous prime is 25591529. The next prime is 25591561. The reversal of 25591541 is 14519552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22515025 + 3076516 = 4745^2 + 1754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25591541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25591498 and 25591507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25591561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12795770 + 12795771.

It is an arithmetic number, because the mean of its divisors is an integer number (12795771).

Almost surely, 2^25591541 is an apocalyptic number.

It is an amenable number.

25591541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25591541 is an equidigital number, since it uses as much as digits as its factorization.

25591541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 32.

The square root of 25591541 is about 5058.8082588689. The cubic root of 25591541 is about 294.6900546251.

The spelling of 25591541 in words is "twenty-five million, five hundred ninety-one thousand, five hundred forty-one".