1425379549 has 4 divisors (see below), whose sum is σ = 1554959520. Its totient is φ = 1295799580.

The previous prime is 1425379537. The next prime is 1425379561. The reversal of 1425379549 is 9459735241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1425379537) and next prime (1425379561).

It is a cyclic number.

It is not a de Polignac number, because 1425379549 - 2⁵ = 1425379517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425379519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64789969 + ... + 64789990.

It is an arithmetic number, because the mean of its divisors is an integer number (388739880).

Almost surely, 2^1425379549 is an apocalyptic number.

It is an amenable number.

1425379549 is a deficient number, since it is larger than the sum of its proper divisors (129579971).

1425379549 is a wasteful number, since it uses less digits than its factorization.

1425379549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129579970.

The product of its digits is 1360800, while the sum is 49.

The square root of 1425379549 is about 37754.1990909621. The cubic root of 1425379549 is about 1125.4084571802.

The spelling of 1425379549 in words is "one billion, four hundred twenty-five million, three hundred seventy-nine thousand, five hundred forty-nine".