2120664057025 has 6 divisors (see below), whose sum is σ = 2629623430742. Its totient is φ = 1696531245600.

The previous prime is 2120664057023. The next prime is 2120664057037. The reversal of 2120664057025 is 5207504660212.

It can be written as a sum of positive squares in 3 ways, for example, as 15260155024 + 2105403902001 = 123532^2 + 1451001^2 .

It is not a de Polignac number, because 2120664057025 - 2¹ = 2120664057023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120664057023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42413281116 + ... + 42413281165.

Almost surely, 2^{2120664057025} is an apocalyptic number.

2120664057025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120664057025 is a deficient number, since it is larger than the sum of its proper divisors (508959373717).

2120664057025 is an equidigital number, since it uses as much as digits as its factorization.

2120664057025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84826562291 (or 84826562286 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 2120664057025 in words is "two trillion, one hundred twenty billion, six hundred sixty-four million, fifty-seven thousand, twenty-five".