1225960 has 16 divisors (see below), whose sum is σ = 2758500. Its totient is φ = 490368.

The previous prime is 1225949. The next prime is 1225963. The reversal of 1225960 is 695221.

It can be written as a sum of positive squares in 2 ways, for example, as 1044484 + 181476 = 1022^2 + 426^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15285 + ... + 15364.

2^1225960 is an apocalyptic number.

1225960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225960 is an abundant number, since it is smaller than the sum of its proper divisors (1532540).

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

1225960 is a wasteful number, since it uses less digits than its factorization.

1225960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30660 (or 30656 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1225960 is about 1107.2307799190. The cubic root of 1225960 is about 107.0266914516.

The spelling of 1225960 in words is "one million, two hundred twenty-five thousand, nine hundred sixty".