2101425945 has 16 divisors (see below), whose sum is σ = 3396946560. Its totient is φ = 1109205504.

The previous prime is 2101425929. The next prime is 2101426001. The reversal of 2101425945 is 5495241012.

It is not a de Polignac number, because 2101425945 - 2⁴ = 2101425929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720685 + ... + 723594.

It is an arithmetic number, because the mean of its divisors is an integer number (212309160).

Almost surely, 2^2101425945 is an apocalyptic number.

It is an amenable number.

2101425945 is a deficient number, since it is larger than the sum of its proper divisors (1295520615).

2101425945 is a wasteful number, since it uses less digits than its factorization.

2101425945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444384.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2101425945 is about 45841.3126448185. The cubic root of 2101425945 is about 1280.8689463061.

Adding to 2101425945 its reverse (5495241012), we get a palindrome (7596666957).

The spelling of 2101425945 in words is "two billion, one hundred one million, four hundred twenty-five thousand, nine hundred forty-five".