255001020 has 144 divisors (see below), whose sum is σ = 779194080. Its totient is φ = 62087168.

The previous prime is 255001001. The next prime is 255001039. The reversal of 255001020 is 20100552.

255001020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255001001) and next prime (255001039).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2865136 + ... + 2865224.

It is an arithmetic number, because the mean of its divisors is an integer number (5411070).

Almost surely, 2^255001020 is an apocalyptic number.

255001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389597040).

255001020 is an abundant number, since it is smaller than the sum of its proper divisors (524193060).

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

255001020 is a wasteful number, since it uses less digits than its factorization.

255001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 255001020 is about 15968.7513600782. The cubic root of 255001020 is about 634.1334160475.

Adding to 255001020 its reverse (20100552), we get a palindrome (275101572).

It can be divided in two parts, 25500 and 1020, that multiplied together give a square (26010000 = 5100²).

The spelling of 255001020 in words is "two hundred fifty-five million, one thousand, twenty".