2021432625 has 64 divisors (see below), whose sum is σ = 3900049920. Its totient is φ = 1031184000.

The previous prime is 2021432599. The next prime is 2021432627. The reversal of 2021432625 is 5262341202.

It is a happy number.

2021432625 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 4 + 32 + 625 = 666.

It is not a de Polignac number, because 2021432625 - 2⁹ = 2021432113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2021432627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64605 + ... + 90645.

It is an arithmetic number, because the mean of its divisors is an integer number (60938280).

Almost surely, 2^2021432625 is an apocalyptic number.

2021432625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021432625 is a deficient number, since it is larger than the sum of its proper divisors (1878617295).

2021432625 is a wasteful number, since it uses less digits than its factorization.

2021432625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26088 (or 26072 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2021432625 is about 44960.3450275907. The cubic root of 2021432625 is about 1264.4056376579.

Adding to 2021432625 its reverse (5262341202), we get a palindrome (7283773827).

The spelling of 2021432625 in words is "two billion, twenty-one million, four hundred thirty-two thousand, six hundred twenty-five".