1265900 has 18 divisors (see below), whose sum is σ = 2747220. Its totient is φ = 506320.

The previous prime is 1265899. The next prime is 1265903. The reversal of 1265900 is 95621.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1265903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6230 + ... + 6429.

2^1265900 is an apocalyptic number.

1265900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265900 is an abundant number, since it is smaller than the sum of its proper divisors (1481320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265900 is a wasteful number, since it uses less digits than its factorization.

1265900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673 (or 12666 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1265900 is about 1125.1222155837. The cubic root of 1265900 is about 108.1765516478.

The spelling of 1265900 in words is "one million, two hundred sixty-five thousand, nine hundred".