1425731 has 4 divisors (see below), whose sum is σ = 1431264. Its totient is φ = 1420200.

The previous prime is 1425707. The next prime is 1425733. The reversal of 1425731 is 1375241.

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 1425731 - 2⁶ = 1425667 is a prime.

It is a super-2 number, since 2×1425731² = 4065417768722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1425697 and 1425706.

It is not an unprimeable number, because it can be changed into a prime (1425733) 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, 2360 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (357816).

2^1425731 is an apocalyptic number.

1425731 is a deficient number, since it is larger than the sum of its proper divisors (5533).

1425731 is an equidigital number, since it uses as much as digits as its factorization.

1425731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532.

The product of its digits is 840, while the sum is 23.

The square root of 1425731 is about 1194.0397815818. The cubic root of 1425731 is about 112.5500945628.

The spelling of 1425731 in words is "one million, four hundred twenty-five thousand, seven hundred thirty-one".