1425847138 has 4 divisors (see below), whose sum is σ = 2138770710. Its totient is φ = 712923568.

The previous prime is 1425847081. The next prime is 1425847141. The reversal of 1425847138 is 8317485241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1041804729 + 384042409 = 32277^2 + 19597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1425847094 and 1425847103.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 356461783 + ... + 356461786.

Almost surely, 2^1425847138 is an apocalyptic number.

1425847138 is a deficient number, since it is larger than the sum of its proper divisors (712923572).

1425847138 is an equidigital number, since it uses as much as digits as its factorization.

1425847138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712923571.

The product of its digits is 215040, while the sum is 43.

The square root of 1425847138 is about 37760.3911261523. The cubic root of 1425847138 is about 1125.5315053615.

The spelling of 1425847138 in words is "one billion, four hundred twenty-five million, eight hundred forty-seven thousand, one hundred thirty-eight".