2025666101 has 4 divisors (see below), whose sum is σ = 2058873804. Its totient is φ = 1992458400.

The previous prime is 2025666061. The next prime is 2025666103. The reversal of 2025666101 is 1016665202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1092302500 + 933363601 = 33050^2 + 30551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2025666101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2025666103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16603760 + ... + 16603881.

It is an arithmetic number, because the mean of its divisors is an integer number (514718451).

Almost surely, 2^2025666101 is an apocalyptic number.

It is an amenable number.

2025666101 is a deficient number, since it is larger than the sum of its proper divisors (33207703).

2025666101 is an equidigital number, since it uses as much as digits as its factorization.

2025666101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33207702.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2025666101 is about 45007.4005136933. The cubic root of 2025666101 is about 1265.2877015952.

The spelling of 2025666101 in words is "two billion, twenty-five million, six hundred sixty-six thousand, one hundred one".