2390425261 has 18 divisors (see below), whose sum is σ = 2807588238. Its totient is φ = 2029310640.

The previous prime is 2390425241. The next prime is 2390425291. The reversal of 2390425261 is 1625240932.

It can be written as a sum of positive squares in only one way, i.e., 2370229225 + 20196036 = 48685^2 + 4494^2 .

It is not a de Polignac number, because 2390425261 - 2²¹ = 2388328109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2390425201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 558871 + ... + 563131.

Almost surely, 2^2390425261 is an apocalyptic number.

It is an amenable number.

2390425261 is a deficient number, since it is larger than the sum of its proper divisors (417162977).

2390425261 is an equidigital number, since it uses as much as digits as its factorization.

2390425261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489 (or 4375 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2390425261 is about 48891.9754254213. The cubic root of 2390425261 is about 1337.0830700467.

The spelling of 2390425261 in words is "two billion, three hundred ninety million, four hundred twenty-five thousand, two hundred sixty-one".