7287430725 has 72 divisors (see below), whose sum is σ = 13374054720. Its totient is φ = 3791919360.

The previous prime is 7287430723. The next prime is 7287430739. The reversal of 7287430725 is 5270347827.

7287430725 is a `hidden beast` number, since 72 + 87 + 430 + 72 + 5 = 666.

It is not a de Polignac number, because 7287430725 - 2¹ = 7287430723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7287430723) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1816672 + ... + 1820678.

It is an arithmetic number, because the mean of its divisors is an integer number (185750760).

Almost surely, 2^7287430725 is an apocalyptic number.

7287430725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7287430725 is a deficient number, since it is larger than the sum of its proper divisors (6086623995).

7287430725 is a wasteful number, since it uses less digits than its factorization.

7287430725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219 (or 4211 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 7287430725 is about 85366.4496450450. The cubic root of 7287430725 is about 1938.7634026911.

The spelling of 7287430725 in words is "seven billion, two hundred eighty-seven million, four hundred thirty thousand, seven hundred twenty-five".