1265630 has 16 divisors (see below), whose sum is σ = 2313360. Its totient is φ = 498432.

The previous prime is 1265623. The next prime is 1265639. The reversal of 1265630 is 365621.

1265630 = 561² + 562² + ... + 564².

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1265596 and 1265605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (144585).

2^1265630 is an apocalyptic number.

1265630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265630 is a deficient number, since it is larger than the sum of its proper divisors (1047730).

1265630 is a wasteful number, since it uses less digits than its factorization.

1265630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1265630 is about 1125.0022222200. The cubic root of 1265630 is about 108.1688602173.

Subtracting from 1265630 its reverse (365621), we obtain a palindrome (900009).

The spelling of 1265630 in words is "one million, two hundred sixty-five thousand, six hundred thirty".