20004625 has 16 divisors (see below), whose sum is σ = 26282880. Its totient is φ = 15159600.

The previous prime is 20004583. The next prime is 20004667. The reversal of 20004625 is 52640002.

It is an interprime number because it is at equal distance from previous prime (20004583) and next prime (20004667).

It is not a de Polignac number, because 20004625 - 2⁷ = 20004497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1837 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (1642680).

Almost surely, 2^20004625 is an apocalyptic number.

20004625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20004625 is a deficient number, since it is larger than the sum of its proper divisors (6278255).

20004625 is an equidigital number, since it uses as much as digits as its factorization.

20004625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8457 (or 8447 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20004625 is about 4472.6530158285. The cubic root of 20004625 is about 271.4626836826.

Adding to 20004625 its reverse (52640002), we get a palindrome (72644627).

It can be divided in two parts, 20004 and 625, that multiplied together give a triangular number (12502500 = T₅₀₀₀).

The spelling of 20004625 in words is "twenty million, four thousand, six hundred twenty-five".