20435467025 has 12 divisors (see below), whose sum is σ = 25958028684. Its totient is φ = 15949632000.

The previous prime is 20435466991. The next prime is 20435467093. The reversal of 20435467025 is 52076453402.

It can be written as a sum of positive squares in 6 ways, for example, as 1636040704 + 18799426321 = 40448^2 + 137111^2 .

It is not a de Polignac number, because 20435467025 - 2²⁰ = 20434418449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20435467025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9967496 + ... + 9969545.

It is an arithmetic number, because the mean of its divisors is an integer number (2163169057).

Almost surely, 2^20435467025 is an apocalyptic number.

20435467025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20435467025 is a deficient number, since it is larger than the sum of its proper divisors (5522561659).

20435467025 is a wasteful number, since it uses less digits than its factorization.

20435467025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19937092 (or 19937087 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 20435467025 in words is "twenty billion, four hundred thirty-five million, four hundred sixty-seven thousand, twenty-five".