20453102525 has 6 divisors (see below), whose sum is σ = 25361847162. Its totient is φ = 16362482000.

The previous prime is 20453102497. The next prime is 20453102569. The reversal of 20453102525 is 52520135402.

It can be written as a sum of positive squares in 3 ways, for example, as 4543568836 + 15909533689 = 67406^2 + 126133^2 .

It is not a de Polignac number, because 20453102525 - 2⁸ = 20453102269 is a prime.

It is a super-2 number, since 2×20453102525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 409062026 + ... + 409062075.

It is an arithmetic number, because the mean of its divisors is an integer number (4226974527).

Almost surely, 2^20453102525 is an apocalyptic number.

20453102525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20453102525 is a deficient number, since it is larger than the sum of its proper divisors (4908744637).

20453102525 is an equidigital number, since it uses as much as digits as its factorization.

20453102525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818124111 (or 818124106 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 20453102525 its reverse (52520135402), we get a palindrome (72973237927).

The spelling of 20453102525 in words is "twenty billion, four hundred fifty-three million, one hundred two thousand, five hundred twenty-five".