1401625 has 8 divisors (see below), whose sum is σ = 1749384. Its totient is φ = 1121200.

The previous prime is 1401623. The next prime is 1401629. The reversal of 1401625 is 5261041.

It can be written as a sum of positive squares in 4 ways, for example, as 328329 + 1073296 = 573^2 + 1036^2 .

It is not a de Polignac number, because 1401625 - 2¹ = 1401623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401623) 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, 5482 + ... + 5731.

It is an arithmetic number, because the mean of its divisors is an integer number (218673).

2^1401625 is an apocalyptic number.

It is an amenable number.

1401625 is a deficient number, since it is larger than the sum of its proper divisors (347759).

1401625 is an equidigital number, since it uses as much as digits as its factorization.

1401625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11228 (or 11218 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1401625 is about 1183.9024453054. The cubic root of 1401625 is about 111.9121600806.

Adding to 1401625 its reverse (5261041), we get a palindrome (6662666).

It can be divided in two parts, 14016 and 25, that added together give a palindrome (14041).

The spelling of 1401625 in words is "one million, four hundred one thousand, six hundred twenty-five".