25520141 has 2 divisors, whose sum is σ = 25520142. Its totient is φ = 25520140.

The previous prime is 25520137. The next prime is 25520167. The reversal of 25520141 is 14102552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 5044516 = 4525^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 25520141 - 2² = 25520137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25520171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760070 + 12760071.

It is an arithmetic number, because the mean of its divisors is an integer number (12760071).

Almost surely, 2^25520141 is an apocalyptic number.

It is an amenable number.

25520141 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520141 is an equidigital number, since it uses as much as digits as its factorization.

25520141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25520141 is about 5051.7463317154. The cubic root of 25520141 is about 294.4157391369.

Adding to 25520141 its reverse (14102552), we get a palindrome (39622693).

The spelling of 25520141 in words is "twenty-five million, five hundred twenty thousand, one hundred forty-one".