20010625 has 20 divisors (see below), whose sum is σ = 25332516. Its totient is φ = 15800000.

The previous prime is 20010539. The next prime is 20010637. The reversal of 20010625 is 52601002.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 15046641 + 4963984 = 3879^2 + 2228^2 .

It is not a de Polignac number, because 20010625 - 2¹⁷ = 19879553 is a prime.

It is a super-2 number, since 2×20010625² = 800850225781250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010599 and 20010608.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62967 + ... + 63283.

Almost surely, 2^20010625 is an apocalyptic number.

20010625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20010625 is a deficient number, since it is larger than the sum of its proper divisors (5321891).

20010625 is an equidigital number, since it uses as much as digits as its factorization.

20010625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20010625 is about 4473.3237083851. The cubic root of 20010625 is about 271.4898209620.

Adding to 20010625 its reverse (52601002), we get a palindrome (72611627).

The spelling of 20010625 in words is "twenty million, ten thousand, six hundred twenty-five".