290401625 has 8 divisors (see below), whose sum is σ = 362421384. Its totient is φ = 232321200.

The previous prime is 290401619. The next prime is 290401627. The reversal of 290401625 is 526104092.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87965641 + 202435984 = 9379^2 + 14228^2 .

It is not a de Polignac number, because 290401625 - 2⁶ = 290401561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290401627) 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, 1161482 + ... + 1161731.

It is an arithmetic number, because the mean of its divisors is an integer number (45302673).

Almost surely, 2^290401625 is an apocalyptic number.

290401625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

290401625 is a deficient number, since it is larger than the sum of its proper divisors (72019759).

290401625 is an equidigital number, since it uses as much as digits as its factorization.

290401625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323228 (or 2323218 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 290401625 is about 17041.1744020182. The cubic root of 290401625 is about 662.2160168891.

The spelling of 290401625 in words is "two hundred ninety million, four hundred one thousand, six hundred twenty-five".