1001425 has 12 divisors (see below), whose sum is σ = 1273356. Its totient is φ = 780800.

The previous prime is 1001411. The next prime is 1001431. The reversal of 1001425 is 5241001.

It can be written as a sum of positive squares in 6 ways, for example, as 25281 + 976144 = 159^2 + 988^2 .

It is not a de Polignac number, because 1001425 - 2¹¹ = 999377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (106113).

2^1001425 is an apocalyptic number.

It is an amenable number.

1001425 is a deficient number, since it is larger than the sum of its proper divisors (271931).

1001425 is an equidigital number, since it uses as much as digits as its factorization.

1001425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1001425 is about 1000.7122463526. The cubic root of 1001425 is about 100.0474774553.

Adding to 1001425 its reverse (5241001), we get a palindrome (6242426).

The spelling of 1001425 in words is "one million, one thousand, four hundred twenty-five".