13770491225 has 24 divisors (see below), whose sum is σ = 18040095360. Its totient is φ = 10410182720.

The previous prime is 13770491221. The next prime is 13770491257. The reversal of 13770491225 is 52219407731.

It is a happy number.

It is not a de Polignac number, because 13770491225 - 2² = 13770491221 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13770491221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167987 + ... + 236136.

It is an arithmetic number, because the mean of its divisors is an integer number (751670640).

Almost surely, 2^13770491225 is an apocalyptic number.

It is an amenable number.

13770491225 is a deficient number, since it is larger than the sum of its proper divisors (4269604135).

13770491225 is a wasteful number, since it uses less digits than its factorization.

13770491225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404209 (or 404204 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

Adding to 13770491225 its reverse (52219407731), we get a palindrome (65989898956).

The spelling of 13770491225 in words is "thirteen billion, seven hundred seventy million, four hundred ninety-one thousand, two hundred twenty-five".