2497377745 has 4 divisors (see below), whose sum is σ = 2996853300. Its totient is φ = 1997902192.

The previous prime is 2497377739. The next prime is 2497377761. The reversal of 2497377745 is 5477737942.

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 436308544 + 2061069201 = 20888^2 + 45399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2497377745 - 2³ = 2497377737 is a prime.

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, 249737770 + ... + 249737779.

It is an arithmetic number, because the mean of its divisors is an integer number (749213325).

Almost surely, 2^2497377745 is an apocalyptic number.

It is an amenable number.

2497377745 is a deficient number, since it is larger than the sum of its proper divisors (499475555).

2497377745 is an equidigital number, since it uses as much as digits as its factorization.

2497377745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499475554.

The product of its digits is 10372320, while the sum is 55.

The square root of 2497377745 is about 49973.7705701701. The cubic root of 2497377745 is about 1356.7341159457.

The spelling of 2497377745 in words is "two billion, four hundred ninety-seven million, three hundred seventy-seven thousand, seven hundred forty-five".