290390725 has 12 divisors (see below), whose sum is σ = 361493604. Its totient is φ = 231403520.

The previous prime is 290390693. The next prime is 290390729. The reversal of 290390725 is 527093092.

It can be written as a sum of positive squares in 6 ways, for example, as 56881764 + 233508961 = 7542^2 + 15281^2 .

It is not a de Polignac number, because 290390725 - 2⁵ = 290390693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290390729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16174 + ... + 29023.

It is an arithmetic number, because the mean of its divisors is an integer number (30124467).

Almost surely, 2^290390725 is an apocalyptic number.

290390725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

290390725 is a deficient number, since it is larger than the sum of its proper divisors (71102879).

290390725 is a wasteful number, since it uses less digits than its factorization.

290390725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45464 (or 45459 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 290390725 is about 17040.8545853780. The cubic root of 290390725 is about 662.2077315304.

The spelling of 290390725 in words is "two hundred ninety million, three hundred ninety thousand, seven hundred twenty-five".