1275648450 has 48 divisors (see below), whose sum is σ = 3265671936. Its totient is φ = 329198400.

The previous prime is 1275648403. The next prime is 1275648461. The reversal of 1275648450 is 548465721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132517 + ... + 141816.

It is an arithmetic number, because the mean of its divisors is an integer number (68034832).

Almost surely, 2^1275648450 is an apocalyptic number.

1275648450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275648450 is an abundant number, since it is smaller than the sum of its proper divisors (1990023486).

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

1275648450 is a wasteful number, since it uses less digits than its factorization.

1275648450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274379 (or 274374 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 1275648450 is about 35716.2211047026. The cubic root of 1275648450 is about 1084.5352409316.

The spelling of 1275648450 in words is "one billion, two hundred seventy-five million, six hundred forty-eight thousand, four hundred fifty".