2501540001 has 6 divisors (see below), whose sum is σ = 3613335570. Its totient is φ = 1667693328.

The previous prime is 2501539979. The next prime is 2501540051. The reversal of 2501540001 is 1000451052.

2501540001 is a `hidden beast` number, since 250 + 15 + 400 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2500100001 + 1440000 = 50001^2 + 1200^2 .

It is not a de Polignac number, because 2501540001 - 2⁵ = 2501539969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2501540051) 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, 138974436 + ... + 138974453.

It is an arithmetic number, because the mean of its divisors is an integer number (602222595).

Almost surely, 2^2501540001 is an apocalyptic number.

It is an amenable number.

2501540001 is a deficient number, since it is larger than the sum of its proper divisors (1111795569).

2501540001 is a wasteful number, since it uses less digits than its factorization.

2501540001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277948895 (or 277948892 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2501540001 is about 50015.3976391271. The cubic root of 2501540001 is about 1357.4874314842.

Adding to 2501540001 its reverse (1000451052), we get a palindrome (3501991053).

The spelling of 2501540001 in words is "two billion, five hundred one million, five hundred forty thousand, one".