2525797145 has 4 divisors (see below), whose sum is σ = 3030956580. Its totient is φ = 2020637712.

The previous prime is 2525797133. The next prime is 2525797147. The reversal of 2525797145 is 5417975252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1148125456 + 1377671689 = 33884^2 + 37117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2525797145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2525797145.

It is not an unprimeable number, because it can be changed into a prime (2525797147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252579710 + ... + 252579719.

It is an arithmetic number, because the mean of its divisors is an integer number (757739145).

Almost surely, 2^2525797145 is an apocalyptic number.

It is an amenable number.

2525797145 is a deficient number, since it is larger than the sum of its proper divisors (505159435).

2525797145 is an equidigital number, since it uses as much as digits as its factorization.

2525797145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505159434.

The product of its digits is 882000, while the sum is 47.

The square root of 2525797145 is about 50257.3093688868. The cubic root of 2525797145 is about 1361.8611242641.

The spelling of 2525797145 in words is "two billion, five hundred twenty-five million, seven hundred ninety-seven thousand, one hundred forty-five".