13770825 has 12 divisors (see below), whose sum is σ = 22767888. Its totient is φ = 7344400.

The previous prime is 13770821. The next prime is 13770863. The reversal of 13770825 is 52807731.

It is not a de Polignac number, because 13770825 - 2² = 13770821 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13770821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91731 + ... + 91880.

It is an arithmetic number, because the mean of its divisors is an integer number (1897324).

Almost surely, 2^13770825 is an apocalyptic number.

13770825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13770825 is a deficient number, since it is larger than the sum of its proper divisors (8997063).

13770825 is a wasteful number, since it uses less digits than its factorization.

13770825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183624 (or 183619 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 13770825 is about 3710.9062235524. The cubic root of 13770825 is about 239.6918788973.

The spelling of 13770825 in words is "thirteen million, seven hundred seventy thousand, eight hundred twenty-five".