1025257 has 2 divisors, whose sum is σ = 1025258. Its totient is φ = 1025256.

The previous prime is 1025239. The next prime is 1025261. The reversal of 1025257 is 7525201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 3136 = 1011^2 + 56^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512628 + 512629.

It is an arithmetic number, because the mean of its divisors is an integer number (512629).

2^1025257 is an apocalyptic number.

It is an amenable number.

1025257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025257 is an equidigital number, since it uses as much as digits as its factorization.

1025257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 1025257 is about 1012.5497518641. The cubic root of 1025257 is about 100.8349098555.

The spelling of 1025257 in words is "one million, twenty-five thousand, two hundred fifty-seven".