7925351540 has 12 divisors (see below), whose sum is σ = 16643238276. Its totient is φ = 3170140608.

The previous prime is 7925351509. The next prime is 7925351549. The reversal of 7925351540 is 451535297.

It can be written as a sum of positive squares in 2 ways, for example, as 5975599204 + 1949752336 = 77302^2 + 44156^2 .

It is a super-2 number, since 2×7925351540² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7925351549) 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, 198133769 + ... + 198133808.

It is an arithmetic number, because the mean of its divisors is an integer number (1386936523).

Almost surely, 2^7925351540 is an apocalyptic number.

It is an amenable number.

7925351540 is an abundant number, since it is smaller than the sum of its proper divisors (8717886736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7925351540 is a wasteful number, since it uses less digits than its factorization.

7925351540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396267586 (or 396267584 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 7925351540 is about 89024.4434972778. The cubic root of 7925351540 is about 1993.7598454849.

The spelling of 7925351540 in words is "seven billion, nine hundred twenty-five million, three hundred fifty-one thousand, five hundred forty".