20153525 has 12 divisors (see below), whose sum is σ = 28560672. Its totient is φ = 13819440.

The previous prime is 20153513. The next prime is 20153531. The reversal of 20153525 is 52535102.

It is not a de Polignac number, because 20153525 - 2⁶ = 20153461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20153525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57407 + ... + 57756.

It is an arithmetic number, because the mean of its divisors is an integer number (2380056).

Almost surely, 2^20153525 is an apocalyptic number.

20153525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20153525 is a deficient number, since it is larger than the sum of its proper divisors (8407147).

20153525 is a wasteful number, since it uses less digits than its factorization.

20153525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115180 (or 115175 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 20153525 is about 4489.2677576638. The cubic root of 20153525 is about 272.1345436236.

Adding to 20153525 its reverse (52535102), we get a palindrome (72688627).

The spelling of 20153525 in words is "twenty million, one hundred fifty-three thousand, five hundred twenty-five".