1425771949 has 16 divisors (see below), whose sum is σ = 1675548288. Its totient is φ = 1187600832.

The previous prime is 1425771887. The next prime is 1425771953. The reversal of 1425771949 is 9491775241.

It is a cyclic number.

It is not a de Polignac number, because 1425771949 - 2⁷ = 1425771821 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 (1425771959) 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 15 ways as a sum of consecutive naturals, for example, 242367 + ... + 248179.

It is an arithmetic number, because the mean of its divisors is an integer number (104721768).

Almost surely, 2^1425771949 is an apocalyptic number.

It is an amenable number.

1425771949 is a deficient number, since it is larger than the sum of its proper divisors (249776339).

1425771949 is an equidigital number, since it uses as much as digits as its factorization.

1425771949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804.

The product of its digits is 635040, while the sum is 49.

The square root of 1425771949 is about 37759.3955062843. The cubic root of 1425771949 is about 1125.5117208479.

The spelling of 1425771949 in words is "one billion, four hundred twenty-five million, seven hundred seventy-one thousand, nine hundred forty-nine".