20625430 has 16 divisors (see below), whose sum is σ = 42429600. Its totient is φ = 7071552.

The previous prime is 20625421. The next prime is 20625439. The reversal of 20625430 is 3452602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20625421) and next prime (20625439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147255 + ... + 147394.

It is an arithmetic number, because the mean of its divisors is an integer number (2651850).

Almost surely, 2^20625430 is an apocalyptic number.

20625430 is an abundant number, since it is smaller than the sum of its proper divisors (21804170).

20625430 is a wasteful number, since it uses less digits than its factorization.

20625430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294663.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20625430 is about 4541.5228723414. The cubic root of 20625430 is about 274.2422334402.

The spelling of 20625430 in words is "twenty million, six hundred twenty-five thousand, four hundred thirty".