2021064120025 has 24 divisors (see below), whose sum is σ = 2604324384000. Its totient is φ = 1554193406400.

The previous prime is 2021064120017. The next prime is 2021064120083. The reversal of 2021064120025 is 5200214601202.

It is not a de Polignac number, because 2021064120025 - 2³ = 2021064120017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8635615 + ... + 8866564.

It is an arithmetic number, because the mean of its divisors is an integer number (108513516000).

Almost surely, 2^{2021064120025} is an apocalyptic number.

2021064120025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021064120025 is a deficient number, since it is larger than the sum of its proper divisors (583260263975).

2021064120025 is a wasteful number, since it uses less digits than its factorization.

2021064120025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502369 (or 17502364 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2021064120025 its reverse (5200214601202), we get a palindrome (7221278721227).

The spelling of 2021064120025 in words is "two trillion, twenty-one billion, sixty-four million, one hundred twenty thousand, twenty-five".