525457 has 2 divisors, whose sum is σ = 525458. Its totient is φ = 525456.

The previous prime is 525439. The next prime is 525461. The reversal of 525457 is 754525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271441 + 254016 = 521^2 + 504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525457 is a prime.

It is a super-2 number, since 2×525457² = 552210117698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (525467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262728 + 262729.

It is an arithmetic number, because the mean of its divisors is an integer number (262729).

2⁵²⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

525457 is a deficient number, since it is larger than the sum of its proper divisors (1).

525457 is an equidigital number, since it uses as much as digits as its factorization.

525457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7000, while the sum is 28.

The square root of 525457 is about 724.8841286716. The cubic root of 525457 is about 80.6948330330.

The spelling of 525457 in words is "five hundred twenty-five thousand, four hundred fifty-seven".