4021208037025 has 27 divisors (see below), whose sum is σ = 5004002702713. Its totient is φ = 3205584375200.

The previous prime is 4021208036983. The next prime is 4021208037043. The reversal of 4021208037025 is 5207308021204.

It is a happy number.

The square root of 4021208037025 is 2005295.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 668441961889 + 3352766075136 = 817583^2 + 1831056^2 .

It is not a de Polignac number, because 4021208037025 - 2³³ = 4012618102433 is a prime.

It is a super-2 number, since 2×4021208037025² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3900298260 + ... + 3900299290.

Almost surely, 2^{4021208037025} is an apocalyptic number.

4021208037025 is the 2005295-th square number.

4021208037025 is the 1002648-th centered octagonal number.

It is an amenable number.

4021208037025 is a deficient number, since it is larger than the sum of its proper divisors (982794665688).

4021208037025 is an frugal number, since it uses more digits than its factorization.

4021208037025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 4021208037025 in words is "four trillion, twenty-one billion, two hundred eight million, thirty-seven thousand, twenty-five".