2505126644 has 6 divisors (see below), whose sum is σ = 4383971634. Its totient is φ = 1252563320.

The previous prime is 2505126643. The next prime is 2505126661. The reversal of 2505126644 is 4466215052.

It can be written as a sum of positive squares in only one way, i.e., 2080272100 + 424854544 = 45610^2 + 20612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505126643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313140827 + ... + 313140834.

It is an arithmetic number, because the mean of its divisors is an integer number (730661939).

Almost surely, 2^2505126644 is an apocalyptic number.

It is an amenable number.

2505126644 is a deficient number, since it is larger than the sum of its proper divisors (1878844990).

2505126644 is a wasteful number, since it uses less digits than its factorization.

2505126644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626281665 (or 626281663 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2505126644 is about 50051.2401844350. The cubic root of 2505126644 is about 1358.1358983903.

The spelling of 2505126644 in words is "two billion, five hundred five million, one hundred twenty-six thousand, six hundred forty-four".