2525440013 has 4 divisors (see below), whose sum is σ = 2532594588. Its totient is φ = 2518285440.

The previous prime is 2525440007. The next prime is 2525440019. The reversal of 2525440013 is 3100445252.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2525440007) and next prime (2525440019).

It can be written as a sum of positive squares in 2 ways, for example, as 643789129 + 1881650884 = 25373^2 + 43378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525440013 - 2⁸ = 2525439757 is a prime.

It is a super-2 number, since 2×2525440013² = 12755694518522880338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525440019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3576758 + ... + 3577463.

It is an arithmetic number, because the mean of its divisors is an integer number (633148647).

Almost surely, 2^2525440013 is an apocalyptic number.

It is an amenable number.

2525440013 is a deficient number, since it is larger than the sum of its proper divisors (7154575).

2525440013 is an equidigital number, since it uses as much as digits as its factorization.

2525440013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154574.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2525440013 is about 50253.7562078697. The cubic root of 2525440013 is about 1361.7969350090.

Adding to 2525440013 its reverse (3100445252), we get a palindrome (5625885265).

The spelling of 2525440013 in words is "two billion, five hundred twenty-five million, four hundred forty thousand, thirteen".