20152725 has 24 divisors (see below), whose sum is σ = 33539520. Its totient is φ = 10677120.

The previous prime is 20152703. The next prime is 20152739. The reversal of 20152725 is 52725102.

It is not a de Polignac number, because 20152725 - 2⁸ = 20152469 is a prime.

It is a super-2 number, since 2×20152725² = 812264649851250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152695 and 20152704.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 11721 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (1397480).

Almost surely, 2^20152725 is an apocalyptic number.

20152725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20152725 is a deficient number, since it is larger than the sum of its proper divisors (13386795).

20152725 is a wasteful number, since it uses less digits than its factorization.

20152725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 20152725 is about 4489.1786553890. The cubic root of 20152725 is about 272.1309427562.

Adding to 20152725 its reverse (52725102), we get a palindrome (72877827).

The spelling of 20152725 in words is "twenty million, one hundred fifty-two thousand, seven hundred twenty-five".