13673506725 has 192 divisors, whose sum is σ = 27585377280. Its totient is φ = 6696069120.

The previous prime is 13673506681. The next prime is 13673506733. The reversal of 13673506725 is 52760537631.

13673506725 is a `hidden beast` number, since 1 + 3 + 6 + 73 + 506 + 72 + 5 = 666.

It is not a de Polignac number, because 13673506725 - 2²¹ = 13671409573 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43685169 + ... + 43685481.

It is an arithmetic number, because the mean of its divisors is an integer number (143673840).

Almost surely, 2^13673506725 is an apocalyptic number.

13673506725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13673506725 is an abundant number, since it is smaller than the sum of its proper divisors (13911870555).

13673506725 is an equidigital number, since it uses as much as digits as its factorization.

13673506725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The spelling of 13673506725 in words is "thirteen billion, six hundred seventy-three million, five hundred six thousand, seven hundred twenty-five".