1255500250 has 32 divisors (see below), whose sum is σ = 2353059072. Its totient is φ = 501610000.

The previous prime is 1255500187. The next prime is 1255500251. The reversal of 1255500250 is 520055521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1255500251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255315 + ... + 260185.

It is an arithmetic number, because the mean of its divisors is an integer number (73533096).

Almost surely, 2^1255500250 is an apocalyptic number.

1255500250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255500250 is a deficient number, since it is larger than the sum of its proper divisors (1097558822).

1255500250 is a wasteful number, since it uses less digits than its factorization.

1255500250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 1255500250 is about 35433.0389608343. The cubic root of 1255500250 is about 1078.7950238268.

Adding to 1255500250 its reverse (520055521), we get a palindrome (1775555771).

The spelling of 1255500250 in words is "one billion, two hundred fifty-five million, five hundred thousand, two hundred fifty".