1001025255 has 16 divisors (see below), whose sum is σ = 1602080640. Its totient is φ = 533733408.

The previous prime is 1001025197. The next prime is 1001025287. The reversal of 1001025255 is 5525201001.

1001025255 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001025255 - 2⁶ = 1001025191 is a prime.

It is a super-2 number, since 2×1001025255² = 2004103122295630050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68376 + ... + 81714.

It is an arithmetic number, because the mean of its divisors is an integer number (100130040).

Almost surely, 2^1001025255 is an apocalyptic number.

1001025255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001025255 is a deficient number, since it is larger than the sum of its proper divisors (601055385).

1001025255 is a wasteful number, since it uses less digits than its factorization.

1001025255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18350.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1001025255 is about 31638.9831536982. The cubic root of 1001025255 is about 1000.3416349389.

Adding to 1001025255 its reverse (5525201001), we get a palindrome (6526226256).

The spelling of 1001025255 in words is "one billion, one million, twenty-five thousand, two hundred fifty-five".