20152155025 has 6 divisors (see below), whose sum is σ = 24988672262. Its totient is φ = 16121724000.

The previous prime is 20152154993. The next prime is 20152155031. The reversal of 20152155025 is 52055125102.

It can be written as a sum of positive squares in 3 ways, for example, as 899760016 + 19252395009 = 29996^2 + 138753^2 .

It is not a de Polignac number, because 20152155025 - 2⁵ = 20152154993 is a prime.

It is a super-2 number, since 2×20152155025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20152154984 and 20152155002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403043076 + ... + 403043125.

Almost surely, 2^20152155025 is an apocalyptic number.

20152155025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20152155025 is a deficient number, since it is larger than the sum of its proper divisors (4836517237).

20152155025 is an equidigital number, since it uses as much as digits as its factorization.

20152155025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806086211 (or 806086206 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 20152155025 in words is "twenty billion, one hundred fifty-two million, one hundred fifty-five thousand, twenty-five".