2506991045 has 16 divisors (see below), whose sum is σ = 3308739840. Its totient is φ = 1811924544.

The previous prime is 2506991033. The next prime is 2506991087. The reversal of 2506991045 is 5401996052.

It is a cyclic number.

It is not a de Polignac number, because 2506991045 - 2¹² = 2506986949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2506990993 and 2506991011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407255 + ... + 413364.

It is an arithmetic number, because the mean of its divisors is an integer number (206796240).

Almost surely, 2^2506991045 is an apocalyptic number.

It is an amenable number.

2506991045 is a deficient number, since it is larger than the sum of its proper divisors (801748795).

2506991045 is a wasteful number, since it uses less digits than its factorization.

2506991045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820684.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 2506991045 is about 50069.8616435077. The cubic root of 2506991045 is about 1358.4727385832.

The spelling of 2506991045 in words is "two billion, five hundred six million, nine hundred ninety-one thousand, forty-five".