2525810249 has 4 divisors (see below), whose sum is σ = 2529256836. Its totient is φ = 2522363664.

The previous prime is 2525810179. The next prime is 2525810263. The reversal of 2525810249 is 9420185252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1613468224 + 912342025 = 40168^2 + 30205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2525810249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2525810279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722194 + ... + 1723659.

It is an arithmetic number, because the mean of its divisors is an integer number (632314209).

Almost surely, 2^2525810249 is an apocalyptic number.

It is an amenable number.

2525810249 is a deficient number, since it is larger than the sum of its proper divisors (3446587).

2525810249 is an equidigital number, since it uses as much as digits as its factorization.

2525810249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446586.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 2525810249 is about 50257.4397378139. The cubic root of 2525810249 is about 1361.8634794014.

The spelling of 2525810249 in words is "two billion, five hundred twenty-five million, eight hundred ten thousand, two hundred forty-nine".