125417264449 has 3 divisors (see below), whose sum is σ = 125417618593. Its totient is φ = 125416910306.

The previous prime is 125417264437. The next prime is 125417264471. The reversal of 125417264449 is 944462714521.

The square root of 125417264449 is 354143.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 125417264449 - 2⁷ = 125417264321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125417264419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 177072 + ... + 531214.

Almost surely, 2^125417264449 is an apocalyptic number.

125417264449 is the 354143-rd square number.

125417264449 is the 177072-nd centered octagonal number.

It is an amenable number.

125417264449 is a deficient number, since it is larger than the sum of its proper divisors (354144).

125417264449 is an frugal number, since it uses more digits than its factorization.

125417264449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708286 (or 354143 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

Multiplying 125417264449 by its sum of digits (49), we get a square (6145445958001 = 2479001²).

The spelling of 125417264449 in words is "one hundred twenty-five billion, four hundred seventeen million, two hundred sixty-four thousand, four hundred forty-nine".