2809735425 has 48 divisors (see below), whose sum is σ = 5898967680. Its totient is φ = 1284448320.

The previous prime is 2809735391. The next prime is 2809735451. The reversal of 2809735425 is 5245379082.

It is not a de Polignac number, because 2809735425 - 2¹⁴ = 2809719041 is a prime.

It is a super-2 number, since 2×2809735425² = 15789226316999861250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 292602 + ... + 302051.

It is an arithmetic number, because the mean of its divisors is an integer number (122895160).

Almost surely, 2^2809735425 is an apocalyptic number.

2809735425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2809735425 is an abundant number, since it is smaller than the sum of its proper divisors (3089232255).

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

2809735425 is a wasteful number, since it uses less digits than its factorization.

2809735425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594679 (or 594668 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 2809735425 is about 53006.9375176495. The cubic root of 2809735425 is about 1411.0913913115.

The spelling of 2809735425 in words is "two billion, eight hundred nine million, seven hundred thirty-five thousand, four hundred twenty-five".