2021425455 has 16 divisors (see below), whose sum is σ = 3696321024. Its totient is φ = 924080160.

The previous prime is 2021425423. The next prime is 2021425481. The reversal of 2021425455 is 5545241202.

It is not a de Polignac number, because 2021425455 - 2⁵ = 2021425423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9625731 + ... + 9625940.

It is an arithmetic number, because the mean of its divisors is an integer number (231020064).

Almost surely, 2^2021425455 is an apocalyptic number.

2021425455 is a deficient number, since it is larger than the sum of its proper divisors (1674895569).

2021425455 is a wasteful number, since it uses less digits than its factorization.

2021425455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19251686.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2021425455 is about 44960.2652905874. The cubic root of 2021425455 is about 1264.4041427117.

Adding to 2021425455 its reverse (5545241202), we get a palindrome (7566666657).

The spelling of 2021425455 in words is "two billion, twenty-one million, four hundred twenty-five thousand, four hundred fifty-five".