2525644613 has 2 divisors, whose sum is σ = 2525644614. Its totient is φ = 2525644612.

The previous prime is 2525644577. The next prime is 2525644631. The reversal of 2525644613 is 3164465252.

Together with next prime (2525644631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2424380644 + 101263969 = 49238^2 + 10063^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525644613 - 2¹⁸ = 2525382469 is a prime.

It is a super-2 number, since 2×2525644613² = 12757761422351839538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2525644313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262822306 + 1262822307.

It is an arithmetic number, because the mean of its divisors is an integer number (1262822307).

Almost surely, 2^2525644613 is an apocalyptic number.

It is an amenable number.

2525644613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525644613 is an equidigital number, since it uses as much as digits as its factorization.

2525644613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 2525644613 is about 50255.7918353696. The cubic root of 2525644613 is about 1361.8337096077.

The spelling of 2525644613 in words is "two billion, five hundred twenty-five million, six hundred forty-four thousand, six hundred thirteen".