11638920025 has 12 divisors (see below), whose sum is σ = 14439911724. Its totient is φ = 9306200000.

The previous prime is 11638920017. The next prime is 11638920031. The reversal of 11638920025 is 52002983611.

It can be written as a sum of positive squares in 6 ways, for example, as 3946226761 + 7692693264 = 62819^2 + 87708^2 .

It is not a de Polignac number, because 11638920025 - 2³ = 11638920017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74926 + ... + 169975.

It is an arithmetic number, because the mean of its divisors is an integer number (1203325977).

Almost surely, 2^11638920025 is an apocalyptic number.

It is an amenable number.

11638920025 is a deficient number, since it is larger than the sum of its proper divisors (2800991699).

11638920025 is a wasteful number, since it uses less digits than its factorization.

11638920025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246812 (or 246807 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 11638920025 in words is "eleven billion, six hundred thirty-eight million, nine hundred twenty thousand, twenty-five".