2545274257 has 4 divisors (see below), whose sum is σ = 2679236080. Its totient is φ = 2411312436.

The previous prime is 2545274239. The next prime is 2545274267. The reversal of 2545274257 is 7524725452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545274257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545274267) 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, 66980883 + ... + 66980920.

It is an arithmetic number, because the mean of its divisors is an integer number (669809020).

Almost surely, 2^2545274257 is an apocalyptic number.

It is an amenable number.

2545274257 is a deficient number, since it is larger than the sum of its proper divisors (133961823).

2545274257 is a wasteful number, since it uses less digits than its factorization.

2545274257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133961822.

The product of its digits is 784000, while the sum is 43.

The square root of 2545274257 is about 50450.7111644623. The cubic root of 2545274257 is about 1365.3527257801.

The spelling of 2545274257 in words is "two billion, five hundred forty-five million, two hundred seventy-four thousand, two hundred fifty-seven".