7425252731 has 4 divisors (see below), whose sum is σ = 7996426032. Its totient is φ = 6854079432.

The previous prime is 7425252727. The next prime is 7425252733. The reversal of 7425252731 is 1372525247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7425252731 - 2² = 7425252727 is a prime.

It is a super-2 number, since 2×7425252731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7425252733) 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, 285586631 + ... + 285586656.

It is an arithmetic number, because the mean of its divisors is an integer number (1999106508).

Almost surely, 2^7425252731 is an apocalyptic number.

7425252731 is a deficient number, since it is larger than the sum of its proper divisors (571173301).

7425252731 is a wasteful number, since it uses less digits than its factorization.

7425252731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571173300.

The product of its digits is 117600, while the sum is 38.

The square root of 7425252731 is about 86169.9061795938. The cubic root of 7425252731 is about 1950.9093046911.

Adding to 7425252731 its reverse (1372525247), we get a palindrome (8797777978).

The spelling of 7425252731 in words is "seven billion, four hundred twenty-five million, two hundred fifty-two thousand, seven hundred thirty-one".