1379884849225 has 27 divisors (see below), whose sum is σ = 1719996143143. Its totient is φ = 1098170717840.

The previous prime is 1379884849207. The next prime is 1379884849253. The reversal of 1379884849225 is 5229484889731.

It is a happy number.

The square root of 1379884849225 is 1174685.

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., 496758545721 + 883126303504 = 704811^2 + 939748^2 .

It is not a de Polignac number, because 1379884849225 - 2²⁵ = 1379851294793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1403748084 + ... + 1403749066.

Almost surely, 2^{1379884849225} is an apocalyptic number.

1379884849225 is the 1174685-th square number.

1379884849225 is the 587343-rd centered octagonal number.

It is an amenable number.

1379884849225 is a deficient number, since it is larger than the sum of its proper divisors (340111293918).

1379884849225 is an frugal number, since it uses more digits than its factorization.

1379884849225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454 (or 1227 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 70.

The spelling of 1379884849225 in words is "one trillion, three hundred seventy-nine billion, eight hundred eighty-four million, eight hundred forty-nine thousand, two hundred twenty-five".