2512640245 has 4 divisors (see below), whose sum is σ = 3015168300. Its totient is φ = 2010112192.

The previous prime is 2512640227. The next prime is 2512640261. The reversal of 2512640245 is 5420462152.

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 1913712516 + 598927729 = 43746^2 + 24473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512640245 - 2⁹ = 2512639733 is a prime.

It is a super-2 number, since 2×2512640245² = 12626722001587320050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251264020 + ... + 251264029.

It is an arithmetic number, because the mean of its divisors is an integer number (753792075).

Almost surely, 2^2512640245 is an apocalyptic number.

It is an amenable number.

2512640245 is a deficient number, since it is larger than the sum of its proper divisors (502528055).

2512640245 is an equidigital number, since it uses as much as digits as its factorization.

2512640245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502528054.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 2512640245 is about 50126.2430768555. The cubic root of 2512640245 is about 1359.4923575749.

The spelling of 2512640245 in words is "two billion, five hundred twelve million, six hundred forty thousand, two hundred forty-five".