2009025591 has 16 divisors (see below), whose sum is σ = 2832124800. Its totient is φ = 1263260448.

The previous prime is 2009025559. The next prime is 2009025607. The reversal of 2009025591 is 1955209002.

It is not a de Polignac number, because 2009025591 - 2⁵ = 2009025559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009025511) 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, 64696 + ... + 90573.

It is an arithmetic number, because the mean of its divisors is an integer number (177007800).

Almost surely, 2^2009025591 is an apocalyptic number.

2009025591 is a deficient number, since it is larger than the sum of its proper divisors (823099209).

2009025591 is a wasteful number, since it uses less digits than its factorization.

2009025591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155518.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 2009025591 is about 44822.1551356023. The cubic root of 2009025591 is about 1261.8134614026.

The spelling of 2009025591 in words is "two billion, nine million, twenty-five thousand, five hundred ninety-one".