19840131025 has 81 divisors (see below), whose sum is σ = 29431132563. Its totient is φ = 13251638400.

The previous prime is 19840131007. The next prime is 19840131029. The reversal of 19840131025 is 52013104891.

The square root of 19840131025 is 140855.

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

It can be written as a sum of positive squares in 13 ways, for example, as 7749809089 + 12090321936 = 88033^2 + 109956^2 .

It is not a de Polignac number, because 19840131025 - 2¹¹ = 19840128977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19840131029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 100711227 + ... + 100711423.

Almost surely, 2^19840131025 is an apocalyptic number.

19840131025 is the 140855-th square number.

19840131025 is the 70428-th centered octagonal number.

It is an amenable number.

19840131025 is a deficient number, since it is larger than the sum of its proper divisors (9591001538).

19840131025 is a wasteful number, since it uses less digits than its factorization.

19840131025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 19840131025 in words is "nineteen billion, eight hundred forty million, one hundred thirty-one thousand, twenty-five".