75725457 has 16 divisors (see below), whose sum is σ = 102375360. Its totient is φ = 49784000.

The previous prime is 75725381. The next prime is 75725459. The reversal of 75725457 is 75452757.

It is a cyclic number.

It is not a de Polignac number, because 75725457 - 2⁷ = 75725329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75725459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148519 + ... + 149027.

It is an arithmetic number, because the mean of its divisors is an integer number (6398460).

Almost surely, 2^75725457 is an apocalyptic number.

It is an amenable number.

75725457 is a deficient number, since it is larger than the sum of its proper divisors (26649903).

75725457 is a wasteful number, since it uses less digits than its factorization.

75725457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 343000, while the sum is 42.

The square root of 75725457 is about 8702.0375200294. The cubic root of 75725457 is about 423.0716922676.

The spelling of 75725457 in words is "seventy-five million, seven hundred twenty-five thousand, four hundred fifty-seven".