2525385209 has 16 divisors (see below), whose sum is σ = 2770759680. Its totient is φ = 2292760080.

The previous prime is 2525385157. The next prime is 2525385251. The reversal of 2525385209 is 9025835252.

2525385209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2525385209 - 2¹² = 2525381113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2525384209) 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, 39854 + ... + 81480.

It is an arithmetic number, because the mean of its divisors is an integer number (173172480).

Almost surely, 2^2525385209 is an apocalyptic number.

It is an amenable number.

2525385209 is a deficient number, since it is larger than the sum of its proper divisors (245374471).

2525385209 is a wasteful number, since it uses less digits than its factorization.

2525385209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41780.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 2525385209 is about 50253.2109322380. The cubic root of 2525385209 is about 1361.7870842558.

The spelling of 2525385209 in words is "two billion, five hundred twenty-five million, three hundred eighty-five thousand, two hundred nine".