1416388025 has 24 divisors (see below), whose sum is σ = 1894425624. Its totient is φ = 1044288000.

The previous prime is 1416388021. The next prime is 1416388049. The reversal of 1416388025 is 5208836141.

It can be written as a sum of positive squares in 12 ways, for example, as 218951209 + 1197436816 = 14797^2 + 34604^2 .

It is not a de Polignac number, because 1416388025 - 2² = 1416388021 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1416388025.

It is not an unprimeable number, because it can be changed into a prime (1416388021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224717 + ... + 230933.

It is an arithmetic number, because the mean of its divisors is an integer number (78934401).

Almost surely, 2^1416388025 is an apocalyptic number.

It is an amenable number.

1416388025 is a deficient number, since it is larger than the sum of its proper divisors (478037599).

1416388025 is a wasteful number, since it uses less digits than its factorization.

1416388025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941 (or 6936 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1416388025 is about 37634.9309153079. The cubic root of 1416388025 is about 1123.0370444199.

The spelling of 1416388025 in words is "one billion, four hundred sixteen million, three hundred eighty-eight thousand, twenty-five".