290261825 has 48 divisors (see below), whose sum is σ = 445864320. Its totient is φ = 182891520.

The previous prime is 290261819. The next prime is 290261843. The reversal of 290261825 is 528162092.

It is a happy number.

It is not a de Polignac number, because 290261825 - 2¹⁶ = 290196289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126791 + ... + 129059.

It is an arithmetic number, because the mean of its divisors is an integer number (9288840).

Almost surely, 2^290261825 is an apocalyptic number.

290261825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

290261825 is a deficient number, since it is larger than the sum of its proper divisors (155602495).

290261825 is a wasteful number, since it uses less digits than its factorization.

290261825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 290261825 is about 17037.0720782651. The cubic root of 290261825 is about 662.1097357358.

The spelling of 290261825 in words is "two hundred ninety million, two hundred sixty-one thousand, eight hundred twenty-five".