25263541 has 2 divisors, whose sum is σ = 25263542. Its totient is φ = 25263540.

The previous prime is 25263493. The next prime is 25263551. The reversal of 25263541 is 14536252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22524516 + 2739025 = 4746^2 + 1655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25263541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25263551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631770 + 12631771.

It is an arithmetic number, because the mean of its divisors is an integer number (12631771).

Almost surely, 2^25263541 is an apocalyptic number.

It is an amenable number.

25263541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25263541 is an equidigital number, since it uses as much as digits as its factorization.

25263541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 25263541 is about 5026.2850098258. The cubic root of 25263541 is about 293.4256491751.

Adding to 25263541 its reverse (14536252), we get a palindrome (39799793).

The spelling of 25263541 in words is "twenty-five million, two hundred sixty-three thousand, five hundred forty-one".