1040040025 has 12 divisors (see below), whose sum is σ = 1365511932. Its totient is φ = 783088640.

The previous prime is 1040040007. The next prime is 1040040037. The reversal of 1040040025 is 5200400401.

It can be written as a sum of positive squares in 6 ways, for example, as 78357904 + 961682121 = 8852^2 + 31011^2 .

It is not a de Polignac number, because 1040040025 - 2¹³ = 1040031833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040039990 and 1040040008.

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, 1223152 + ... + 1224001.

It is an arithmetic number, because the mean of its divisors is an integer number (113792661).

Almost surely, 2^1040040025 is an apocalyptic number.

It is an amenable number.

1040040025 is a deficient number, since it is larger than the sum of its proper divisors (325471907).

1040040025 is a wasteful number, since it uses less digits than its factorization.

1040040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447180 (or 2447175 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1040040025 is about 32249.6515485051. The cubic root of 1040040025 is about 1013.1724009948.

Adding to 1040040025 its reverse (5200400401), we get a palindrome (6240440426).

The spelling of 1040040025 in words is "one billion, forty million, forty thousand, twenty-five".