1425331973 has 6 divisors (see below), whose sum is σ = 1543406994. Its totient is φ = 1315690896.

The previous prime is 1425331931. The next prime is 1425331979. The reversal of 1425331973 is 3791335241.

It can be written as a sum of positive squares in 3 ways, for example, as 75724804 + 1349607169 = 8702^2 + 36737^2 .

It is not a de Polignac number, because 1425331973 - 2⁶ = 1425331909 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 (1425331979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4216790 + ... + 4217127.

It is an arithmetic number, because the mean of its divisors is an integer number (257234499).

Almost surely, 2^1425331973 is an apocalyptic number.

1425331973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1425331973 is a deficient number, since it is larger than the sum of its proper divisors (118075021).

1425331973 is an equidigital number, since it uses as much as digits as its factorization.

1425331973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433943 (or 8433930 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 1425331973 is about 37753.5690100949. The cubic root of 1425331973 is about 1125.3959358302.

The spelling of 1425331973 in words is "one billion, four hundred twenty-five million, three hundred thirty-one thousand, nine hundred seventy-three".