2519522945 has 4 divisors (see below), whose sum is σ = 3023427540. Its totient is φ = 2015618352.

The previous prime is 2519522921. The next prime is 2519522947. The reversal of 2519522945 is 5492259152.

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 406465921 + 2113057024 = 20161^2 + 45968^2 .

It is a cyclic number.

It is not a de Polignac number, because 2519522945 - 2¹⁸ = 2519260801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2519522896 and 2519522905.

It is not an unprimeable number, because it can be changed into a prime (2519522947) 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, 251952290 + ... + 251952299.

It is an arithmetic number, because the mean of its divisors is an integer number (755856885).

Almost surely, 2^2519522945 is an apocalyptic number.

It is an amenable number.

2519522945 is a deficient number, since it is larger than the sum of its proper divisors (503904595).

2519522945 is an equidigital number, since it uses as much as digits as its factorization.

2519522945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503904594.

The product of its digits is 324000, while the sum is 44.

The square root of 2519522945 is about 50194.8497856105. The cubic root of 2519522945 is about 1360.7325467089.

The spelling of 2519522945 in words is "two billion, five hundred nineteen million, five hundred twenty-two thousand, nine hundred forty-five".