20125455 has 16 divisors (see below), whose sum is σ = 36801024. Its totient is φ = 9200160.

The previous prime is 20125453. The next prime is 20125471. The reversal of 20125455 is 55452102.

It is a happy number.

It is not a de Polignac number, because 20125455 - 2¹ = 20125453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95731 + ... + 95940.

It is an arithmetic number, because the mean of its divisors is an integer number (2300064).

Almost surely, 2^20125455 is an apocalyptic number.

20125455 is a deficient number, since it is larger than the sum of its proper divisors (16675569).

20125455 is a wasteful number, since it uses less digits than its factorization.

20125455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191686.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 20125455 is about 4486.1403232623. The cubic root of 20125455 is about 272.0081411563.

Adding to 20125455 its reverse (55452102), we get a palindrome (75577557).

The spelling of 20125455 in words is "twenty million, one hundred twenty-five thousand, four hundred fifty-five".