1401040225 has 24 divisors (see below), whose sum is σ = 1891988280. Its totient is φ = 1022968320.

The previous prime is 1401040189. The next prime is 1401040229. The reversal of 1401040225 is 5220401041.

It can be written as a sum of positive squares in 12 ways, for example, as 919544976 + 481495249 = 30324^2 + 21943^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1401040225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1401040229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4707 + ... + 53143.

It is an arithmetic number, because the mean of its divisors is an integer number (78832845).

Almost surely, 2^1401040225 is an apocalyptic number.

It is an amenable number.

1401040225 is a deficient number, since it is larger than the sum of its proper divisors (490948055).

1401040225 is a wasteful number, since it uses less digits than its factorization.

1401040225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48549 (or 48544 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1401040225 is about 37430.4718778698. The cubic root of 1401040225 is about 1118.9659421076.

Adding to 1401040225 its reverse (5220401041), we get a palindrome (6621441266).

The spelling of 1401040225 in words is "one billion, four hundred one million, forty thousand, two hundred twenty-five".