290223625 has 16 divisors (see below), whose sum is σ = 371039760. Its totient is φ = 226512000.

The previous prime is 290223611. The next prime is 290223667. The reversal of 290223625 is 526322092.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 188677696 + 101545929 = 13736^2 + 10077^2 .

It is not a de Polignac number, because 290223625 - 2⁷ = 290223497 is a prime.

It is a super-3 number, since 3×290223625³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23190 + ... + 33439.

It is an arithmetic number, because the mean of its divisors is an integer number (23189985).

Almost surely, 2^290223625 is an apocalyptic number.

290223625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

290223625 is a deficient number, since it is larger than the sum of its proper divisors (80816135).

290223625 is an equidigital number, since it uses as much as digits as its factorization.

290223625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56685 (or 56675 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 290223625 is about 17035.9509567268. The cubic root of 290223625 is about 662.0806887406.

The spelling of 290223625 in words is "two hundred ninety million, two hundred twenty-three thousand, six hundred twenty-five".