1255026505 has 32 divisors (see below), whose sum is σ = 1562685696. Its totient is φ = 967200000.

The previous prime is 1255026499. The next prime is 1255026511. The reversal of 1255026505 is 5056205521.

It is an interprime number because it is at equal distance from previous prime (1255026499) and next prime (1255026511).

It is not a de Polignac number, because 1255026505 - 2³ = 1255026497 is a prime.

It is a Duffinian number.

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, 4035300 + ... + 4035610.

It is an arithmetic number, because the mean of its divisors is an integer number (48833928).

Almost surely, 2^1255026505 is an apocalyptic number.

It is an amenable number.

1255026505 is a deficient number, since it is larger than the sum of its proper divisors (307659191).

1255026505 is a wasteful number, since it uses less digits than its factorization.

1255026505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1255026505 is about 35426.3532557332. The cubic root of 1255026505 is about 1078.6593174834.

The spelling of 1255026505 in words is "one billion, two hundred fifty-five million, twenty-six thousand, five hundred five".