525641 has 2 divisors, whose sum is σ = 525642. Its totient is φ = 525640.

The previous prime is 525607. The next prime is 525649. The reversal of 525641 is 146525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525625 + 16 = 725^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525641 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (525649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262820 + 262821.

It is an arithmetic number, because the mean of its divisors is an integer number (262821).

2⁵²⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

525641 is a deficient number, since it is larger than the sum of its proper divisors (1).

525641 is an equidigital number, since it uses as much as digits as its factorization.

525641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 525641 is about 725.0110343988. The cubic root of 525641 is about 80.7042509406.

It can be divided in two parts, 5256 and 41, that multiplied together give a triangular number (215496 = T₆₅₆).

The spelling of 525641 in words is "five hundred twenty-five thousand, six hundred forty-one".