1255515250 has 64 divisors (see below), whose sum is σ = 2699049600. Its totient is φ = 432504000.

The previous prime is 1255515227. The next prime is 1255515271. The reversal of 1255515250 is 525155521.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40236 + ... + 64264.

It is an arithmetic number, because the mean of its divisors is an integer number (42172650).

Almost surely, 2^1255515250 is an apocalyptic number.

1255515250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255515250 is an abundant number, since it is smaller than the sum of its proper divisors (1443534350).

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

1255515250 is a wasteful number, since it uses less digits than its factorization.

1255515250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24076 (or 24066 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 1255515250 is about 35433.2506270593. The cubic root of 1255515250 is about 1078.7993200853.

The spelling of 1255515250 in words is "one billion, two hundred fifty-five million, five hundred fifteen thousand, two hundred fifty".