2501005 has 16 divisors (see below), whose sum is σ = 3270960. Its totient is φ = 1824768.

The previous prime is 2501003. The next prime is 2501071. The reversal of 2501005 is 5001052.

It can be written as a sum of positive squares in 8 ways, for example, as 110889 + 2390116 = 333^2 + 1546^2 .

It is a 6-Lehmer number, since φ(2501005) divides (2501005-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 2501005 - 2¹ = 2501003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

2501005 is a Rhonda number in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6909 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (204435).

2^2501005 is an apocalyptic number.

It is an amenable number.

2501005 is a deficient number, since it is larger than the sum of its proper divisors (769955).

2501005 is a wasteful number, since it uses less digits than its factorization.

2501005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 2501005 is about 1581.4566070557. The cubic root of 2501005 is about 135.7390649913.

Adding to 2501005 its reverse (5001052), we get a palindrome (7502057).

The spelling of 2501005 in words is "two million, five hundred one thousand, five".