20752425 has 18 divisors (see below), whose sum is σ = 37170302. Its totient is φ = 11067840.

The previous prime is 20752411. The next prime is 20752441. The reversal of 20752425 is 52425702.

It can be written as a sum of positive squares in 3 ways, for example, as 68121 + 20684304 = 261^2 + 4548^2 .

It is not a de Polignac number, because 20752425 - 2⁴ = 20752409 is a prime.

It is a hoax number, since the sum of its digits (27) 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45892 + ... + 46341.

Almost surely, 2^20752425 is an apocalyptic number.

20752425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20752425 is a deficient number, since it is larger than the sum of its proper divisors (16417877).

20752425 is a wasteful number, since it uses less digits than its factorization.

20752425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92249 (or 92241 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20752425 is about 4555.4829601262. The cubic root of 20752425 is about 274.8039373844.

The spelling of 20752425 in words is "twenty million, seven hundred fifty-two thousand, four hundred twenty-five".