2509185852 has 18 divisors (see below), whose sum is σ = 6342664328. Its totient is φ = 836395272.

The previous prime is 2509185799. The next prime is 2509185869. The reversal of 2509185852 is 2585819052.

It is a happy number.

2509185852 is a `hidden beast` number, since 2 + 50 + 9 + 18 + 585 + 2 = 666.

2509185852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 2509185798 and 2509185807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34849768 + ... + 34849839.

Almost surely, 2^2509185852 is an apocalyptic number.

It is an amenable number.

2509185852 is an abundant number, since it is smaller than the sum of its proper divisors (3833478476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2509185852 is a wasteful number, since it uses less digits than its factorization.

2509185852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69699617 (or 69699612 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 2509185852 is about 50091.7742947882. The cubic root of 2509185852 is about 1358.8690590785.

The spelling of 2509185852 in words is "two billion, five hundred nine million, one hundred eighty-five thousand, eight hundred fifty-two".