20716025 has 24 divisors (see below), whose sum is σ = 28444608. Its totient is φ = 14840000.

The previous prime is 20716001. The next prime is 20716037. The reversal of 20716025 is 52061702.

It is not a de Polignac number, because 20716025 - 2¹⁶ = 20650489 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18995 + ... + 20055.

It is an arithmetic number, because the mean of its divisors is an integer number (1185192).

Almost surely, 2^20716025 is an apocalyptic number.

20716025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20716025 is a deficient number, since it is larger than the sum of its proper divisors (7728583).

20716025 is a wasteful number, since it uses less digits than its factorization.

20716025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20716025 is about 4551.4860210705. The cubic root of 20716025 is about 274.6431735635.

Adding to 20716025 its reverse (52061702), we get a palindrome (72777727).

The spelling of 20716025 in words is "twenty million, seven hundred sixteen thousand, twenty-five".