290040025 has 18 divisors (see below), whose sum is σ = 395321486. Its totient is φ = 210936000.

The previous prime is 290040019. The next prime is 290040029. The reversal of 290040025 is 520040092.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 86806489 + 203233536 = 9317^2 + 14256^2 .

It is not a de Polignac number, because 290040025 - 2⁹ = 290039513 is a prime.

It is a super-2 number, since 2×290040025² = 168246432204001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 290039978 and 290040005.

It is not an unprimeable number, because it can be changed into a prime (290040029) 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 17 ways as a sum of consecutive naturals, for example, 44916 + ... + 50965.

Almost surely, 2^290040025 is an apocalyptic number.

290040025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

290040025 is a deficient number, since it is larger than the sum of its proper divisors (105281461).

290040025 is a wasteful number, since it uses less digits than its factorization.

290040025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95913 (or 95897 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 290040025 is about 17030.5614998449. The cubic root of 290040025 is about 661.9410450932.

The spelling of 290040025 in words is "two hundred ninety million, forty thousand, twenty-five".