11892993025 has 27 divisors (see below), whose sum is σ = 15678048841. Its totient is φ = 8947744640.

The previous prime is 11892993023. The next prime is 11892993071. The reversal of 11892993025 is 52039929811.

The square root of 11892993025 is 109055.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 278189041 + 11614803984 = 16679^2 + 107772^2 .

It is not a de Polignac number, because 11892993025 - 2¹ = 11892993023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11892993025.

It is not an unprimeable number, because it can be changed into a prime (11892993023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9269034 + ... + 9270316.

Almost surely, 2^11892993025 is an apocalyptic number.

11892993025 is the 109055-th square number.

11892993025 is the 54528-th centered octagonal number.

It is an amenable number.

11892993025 is a deficient number, since it is larger than the sum of its proper divisors (3785055816).

11892993025 is an frugal number, since it uses more digits than its factorization.

11892993025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 49.

Multiplying 11892993025 by its sum of digits (49), we get a square (582756658225 = 763385²).

The spelling of 11892993025 in words is "eleven billion, eight hundred ninety-two million, nine hundred ninety-three thousand, twenty-five".