5255402520 has 32 divisors (see below), whose sum is σ = 15766207920. Its totient is φ = 1401440640.

The previous prime is 5255402507. The next prime is 5255402539. The reversal of 5255402520 is 252045525.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21897391 + ... + 21897630.

Almost surely, 2^5255402520 is an apocalyptic number.

It is an amenable number.

5255402520 is an abundant number, since it is smaller than the sum of its proper divisors (10510805400).

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

5255402520 is a wasteful number, since it uses less digits than its factorization.

5255402520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43795035 (or 43795031 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 5255402520 is about 72494.1550747369. The cubic root of 5255402520 is about 1738.6092864282.

It can be divided in two parts, 525 and 5402520, that added together give a palindrome (5403045).

The spelling of 5255402520 in words is "five billion, two hundred fifty-five million, four hundred two thousand, five hundred twenty".