2645625001 has 4 divisors (see below), whose sum is σ = 2669896900. Its totient is φ = 2621353104.

The previous prime is 2645624987. The next prime is 2645625013. The reversal of 2645625001 is 1005265462.

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 616032400 + 2029592601 = 24820^2 + 45051^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645625001 - 2⁷ = 2645624873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645625401) 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, 12135786 + ... + 12136003.

It is an arithmetic number, because the mean of its divisors is an integer number (667474225).

Almost surely, 2^2645625001 is an apocalyptic number.

It is an amenable number.

2645625001 is a deficient number, since it is larger than the sum of its proper divisors (24271899).

2645625001 is a wasteful number, since it uses less digits than its factorization.

2645625001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24271898.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2645625001 is about 51435.6394049884. The cubic root of 2645625001 is about 1383.0655440544.

It can be divided in two parts, 264 and 5625001, that added together give a palindrome (5625265).

The spelling of 2645625001 in words is "two billion, six hundred forty-five million, six hundred twenty-five thousand, one".