20452903925 has 6 divisors (see below), whose sum is σ = 25361600898. Its totient is φ = 16362323120.

The previous prime is 20452903909. The next prime is 20452903931. The reversal of 20452903925 is 52930925402.

It can be written as a sum of positive squares in 3 ways, for example, as 127554436 + 20325349489 = 11294^2 + 142567^2 .

It is not a de Polignac number, because 20452903925 - 2⁴ = 20452903909 is a prime.

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, 409058054 + ... + 409058103.

It is an arithmetic number, because the mean of its divisors is an integer number (4226933483).

Almost surely, 2^20452903925 is an apocalyptic number.

20452903925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20452903925 is a deficient number, since it is larger than the sum of its proper divisors (4908696973).

20452903925 is an equidigital number, since it uses as much as digits as its factorization.

20452903925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818116167 (or 818116162 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 20452903925 in words is "twenty billion, four hundred fifty-two million, nine hundred three thousand, nine hundred twenty-five".