1265653 has 2 divisors, whose sum is σ = 1265654. Its totient is φ = 1265652.

The previous prime is 1265639. The next prime is 1265657. The reversal of 1265653 is 3565621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 628849 = 798^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265653 - 2¹³ = 1257461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632826 + 632827.

It is an arithmetic number, because the mean of its divisors is an integer number (632827).

2^1265653 is an apocalyptic number.

It is an amenable number.

1265653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265653 is an equidigital number, since it uses as much as digits as its factorization.

1265653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 1265653 is about 1125.0124443756. The cubic root of 1265653 is about 108.1695154558.

Subtracting from 1265653 its sum of digits (28), we obtain a square (1265625 = 1125²).

Subtracting 1265653 from its reverse (3565621), we obtain a cube (2299968 = 132³).

The spelling of 1265653 in words is "one million, two hundred sixty-five thousand, six hundred fifty-three".