1425631679 has 8 divisors (see below), whose sum is σ = 1509864048. Its totient is φ = 1341440640.

The previous prime is 1425631651. The next prime is 1425631681. The reversal of 1425631679 is 9761365241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425631679 - 2¹² = 1425627583 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 (1425631639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86924 + ... + 102014.

It is an arithmetic number, because the mean of its divisors is an integer number (188733006).

Almost surely, 2^1425631679 is an apocalyptic number.

1425631679 is a deficient number, since it is larger than the sum of its proper divisors (84232369).

1425631679 is a wasteful number, since it uses less digits than its factorization.

1425631679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20665.

The product of its digits is 272160, while the sum is 44.

The square root of 1425631679 is about 37757.5380420917. The cubic root of 1425631679 is about 1125.4748096839.

The spelling of 1425631679 in words is "one billion, four hundred twenty-five million, six hundred thirty-one thousand, six hundred seventy-nine".