2899998725 has 12 divisors (see below), whose sum is σ = 3872614116. Its totient is φ = 2141537280.

The previous prime is 2899998719. The next prime is 2899998727. The reversal of 2899998725 is 5278999982.

It can be written as a sum of positive squares in 6 ways, for example, as 367795684 + 2532203041 = 19178^2 + 50321^2 .

It is not a de Polignac number, because 2899998725 - 2¹⁶ = 2899933189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2899998727) 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, 4461212 + ... + 4461861.

It is an arithmetic number, because the mean of its divisors is an integer number (322717843).

Almost surely, 2^2899998725 is an apocalyptic number.

2899998725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2899998725 is a deficient number, since it is larger than the sum of its proper divisors (972615391).

2899998725 is a wasteful number, since it uses less digits than its factorization.

2899998725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923096 (or 8923091 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 68.

The square root of 2899998725 is about 53851.6362332659. The cubic root of 2899998725 is about 1426.0429381533.

The spelling of 2899998725 in words is "two billion, eight hundred ninety-nine million, nine hundred ninety-eight thousand, seven hundred twenty-five".