20425010625 has 100 divisors (see below), whose sum is σ = 38278575060. Its totient is φ = 10850112000.

The previous prime is 20425010611. The next prime is 20425010633. The reversal of 20425010625 is 52601052402.

20425010625 is a `hidden beast` number, since 2 + 0 + 4 + 25 + 0 + 10 + 625 = 666.

It can be written as a sum of positive squares in 10 ways, for example, as 18441911601 + 1983099024 = 135801^2 + 44532^2 .

It is not a de Polignac number, because 20425010625 - 2⁷ = 20425010497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 99 ways as a sum of consecutive naturals, for example, 15844981 + ... + 15846269.

Almost surely, 2^20425010625 is an apocalyptic number.

20425010625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20425010625 is a deficient number, since it is larger than the sum of its proper divisors (17853564435).

20425010625 is an equidigital number, since it uses as much as digits as its factorization.

20425010625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20425010625 in words is "twenty billion, four hundred twenty-five million, ten thousand, six hundred twenty-five".