20734525 has 24 divisors (see below), whose sum is σ = 29680640. Its totient is φ = 14074560.

The previous prime is 20734517. The next prime is 20734531. The reversal of 20734525 is 52543702.

It is not a de Polignac number, because 20734525 - 2³ = 20734517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20734493 and 20734502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18532 + ... + 19618.

Almost surely, 2^20734525 is an apocalyptic number.

20734525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20734525 is a deficient number, since it is larger than the sum of its proper divisors (8946115).

20734525 is a wasteful number, since it uses less digits than its factorization.

20734525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 20734525 is about 4553.5178708335. The cubic root of 20734525 is about 274.7249039630.

The spelling of 20734525 in words is "twenty million, seven hundred thirty-four thousand, five hundred twenty-five".