1265657 has 2 divisors, whose sum is σ = 1265658. Its totient is φ = 1265656.

The previous prime is 1265653. The next prime is 1265681. The reversal of 1265657 is 7565621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175056 + 90601 = 1084^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265657 - 2² = 1265653 is a prime.

It is not a weakly prime, because it can be changed into another prime (1265653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632828 + 632829.

It is an arithmetic number, because the mean of its divisors is an integer number (632829).

2^1265657 is an apocalyptic number.

It is an amenable number.

1265657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265657 is an equidigital number, since it uses as much as digits as its factorization.

1265657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 1265657 is about 1125.0142221323. The cubic root of 1265657 is about 108.1696294095.

Subtracting from 1265657 its sum of digits (32), we obtain a square (1265625 = 1125²).

The spelling of 1265657 in words is "one million, two hundred sixty-five thousand, six hundred fifty-seven".