20153025 has 36 divisors (see below), whose sum is σ = 36953488. Its totient is φ = 10493280.

The previous prime is 20153009. The next prime is 20153027. The reversal of 20153025 is 52035102.

It is a happy number.

It is not a de Polignac number, because 20153025 - 2⁴ = 20153009 is a prime.

It is a super-2 number, since 2×20153025² = 812288833301250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20152989 and 20153007.

It is not an unprimeable number, because it can be changed into a prime (20153027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8634 + ... + 10716.

Almost surely, 2^20153025 is an apocalyptic number.

20153025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20153025 is a deficient number, since it is larger than the sum of its proper divisors (16800463).

20153025 is a wasteful number, since it uses less digits than its factorization.

20153025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20153025 is about 4489.2120689493. The cubic root of 20153025 is about 272.1322930926.

Adding to 20153025 its reverse (52035102), we get a palindrome (72188127).

The spelling of 20153025 in words is "twenty million, one hundred fifty-three thousand, twenty-five".