1255290515 has 4 divisors (see below), whose sum is σ = 1506348624. Its totient is φ = 1004232408.

The previous prime is 1255290511. The next prime is 1255290521. The reversal of 1255290515 is 5150925521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255290515 - 2² = 1255290511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255290511) 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, 125529047 + ... + 125529056.

It is an arithmetic number, because the mean of its divisors is an integer number (376587156).

Almost surely, 2^1255290515 is an apocalyptic number.

1255290515 is a deficient number, since it is larger than the sum of its proper divisors (251058109).

1255290515 is an equidigital number, since it uses as much as digits as its factorization.

1255290515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251058108.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1255290515 is about 35430.0792406678. The cubic root of 1255290515 is about 1078.7349485235.

The spelling of 1255290515 in words is "one billion, two hundred fifty-five million, two hundred ninety thousand, five hundred fifteen".