2525378197 has 16 divisors (see below), whose sum is σ = 2622246912. Its totient is φ = 2430494640.

The previous prime is 2525378171. The next prime is 2525378221. The reversal of 2525378197 is 7918735252.

It is a cyclic number.

It is not a de Polignac number, because 2525378197 - 2³¹ = 377894549 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 2525378197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525378497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1744528 + ... + 1745974.

It is an arithmetic number, because the mean of its divisors is an integer number (163890432).

Almost surely, 2^2525378197 is an apocalyptic number.

It is an amenable number.

2525378197 is a deficient number, since it is larger than the sum of its proper divisors (96868715).

2525378197 is a wasteful number, since it uses less digits than its factorization.

2525378197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its digits is 1058400, while the sum is 49.

The square root of 2525378197 is about 50253.1411655033. The cubic root of 2525378197 is about 1361.7858238725.

The spelling of 2525378197 in words is "two billion, five hundred twenty-five million, three hundred seventy-eight thousand, one hundred ninety-seven".