1425531 has 8 divisors (see below), whose sum is σ = 1906240. Its totient is φ = 947592.

The previous prime is 1425527. The next prime is 1425539. The reversal of 1425531 is 1355241.

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

It is not a de Polignac number, because 1425531 - 2² = 1425527 is a prime.

It is a super-2 number, since 2×1425531² = 4064277263922, 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 = 1425498 and 1425507.

It is not an unprimeable number, because it can be changed into a prime (1425539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (238280).

2^1425531 is an apocalyptic number.

1425531 is a deficient number, since it is larger than the sum of its proper divisors (480709).

1425531 is an equidigital number, since it uses as much as digits as its factorization.

1425531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385.

The product of its digits is 600, while the sum is 21.

The square root of 1425531 is about 1193.9560293411. The cubic root of 1425531 is about 112.5448315149.

The spelling of 1425531 in words is "one million, four hundred twenty-five thousand, five hundred thirty-one".