1425779831 has 4 divisors (see below), whose sum is σ = 1629462672. Its totient is φ = 1222096992.

The previous prime is 1425779737. The next prime is 1425779837. The reversal of 1425779831 is 1389775241.

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

It is a cyclic number.

It is not a de Polignac number, because 1425779831 - 2¹⁴ = 1425763447 is a prime.

It is a super-2 number, since 2×1425779831² = 4065696252972777122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425779837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101841410 + ... + 101841423.

It is an arithmetic number, because the mean of its divisors is an integer number (407365668).

Almost surely, 2^1425779831 is an apocalyptic number.

1425779831 is a deficient number, since it is larger than the sum of its proper divisors (203682841).

1425779831 is an equidigital number, since it uses as much as digits as its factorization.

1425779831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203682840.

The product of its digits is 423360, while the sum is 47.

The square root of 1425779831 is about 37759.4998775143. The cubic root of 1425779831 is about 1125.5137948746.

The spelling of 1425779831 in words is "one billion, four hundred twenty-five million, seven hundred seventy-nine thousand, eight hundred thirty-one".