13478049025 has 81 divisors (see below), whose sum is σ = 20278270467. Its totient is φ = 8860370400.

The previous prime is 13478049007. The next prime is 13478049029. The reversal of 13478049025 is 52094087431.

The square root of 13478049025 is 116095.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4852097649 + 8625951376 = 69657^2 + 92876^2 .

It is not a de Polignac number, because 13478049025 - 2⁵ = 13478048993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13478049029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 125963022 + ... + 125963128.

Almost surely, 2^13478049025 is an apocalyptic number.

13478049025 is the 116095-th square number.

13478049025 is the 58048-th centered octagonal number.

It is an amenable number.

13478049025 is a deficient number, since it is larger than the sum of its proper divisors (6800221442).

13478049025 is an equidigital number, since it uses as much as digits as its factorization.

13478049025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 13478049025 in words is "thirteen billion, four hundred seventy-eight million, forty-nine thousand, twenty-five".