75274247257 has 24 divisors (see below), whose sum is σ = 86746685760. Its totient is φ = 65145141600.

The previous prime is 75274247231. The next prime is 75274247261.

75274247257 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75274247257 - 2⁷ = 75274247129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75274242257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523119 + ... + 651307.

It is an arithmetic number, because the mean of its divisors is an integer number (3614445240).

Almost surely, 2^75274247257 is an apocalyptic number.

It is an amenable number.

75274247257 is a deficient number, since it is larger than the sum of its proper divisors (11472438503).

75274247257 is a wasteful number, since it uses less digits than its factorization.

75274247257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128445 (or 128434 counting only the distinct ones).

The product of its digits is 7683200, while the sum is 52.

The spelling of 75274247257 in words is "seventy-five billion, two hundred seventy-four million, two hundred forty-seven thousand, two hundred fifty-seven".