2145425245 has 16 divisors (see below), whose sum is σ = 2792443248. Its totient is φ = 1575976960.

The previous prime is 2145425231. The next prime is 2145425267. The reversal of 2145425245 is 5425245412.

It can be written as a sum of positive squares in 8 ways, for example, as 46594276 + 2098830969 = 6826^2 + 45813^2 .

It is not a de Polignac number, because 2145425245 - 2⁹ = 2145424733 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 2145425245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304324 + ... + 311293.

It is an arithmetic number, because the mean of its divisors is an integer number (174527703).

Almost surely, 2^2145425245 is an apocalyptic number.

It is an amenable number.

2145425245 is a deficient number, since it is larger than the sum of its proper divisors (647018003).

2145425245 is a wasteful number, since it uses less digits than its factorization.

2145425245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615680.

The product of its digits is 64000, while the sum is 34.

The square root of 2145425245 is about 46318.7353562249. The cubic root of 2145425245 is about 1289.7468094722.

The spelling of 2145425245 in words is "two billion, one hundred forty-five million, four hundred twenty-five thousand, two hundred forty-five".