7725857652 has 48 divisors (see below), whose sum is σ = 20213793600. Its totient is φ = 2551655520.

The previous prime is 7725857627. The next prime is 7725857663. The reversal of 7725857652 is 2567585277.

7725857652 is a `hidden beast` number, since 7 + 7 + 2 + 585 + 7 + 6 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316374 + ... + 339917.

It is an arithmetic number, because the mean of its divisors is an integer number (421120700).

Almost surely, 2^7725857652 is an apocalyptic number.

It is an amenable number.

7725857652 is an abundant number, since it is smaller than the sum of its proper divisors (12487935948).

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

7725857652 is a wasteful number, since it uses less digits than its factorization.

7725857652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656413 (or 656405 counting only the distinct ones).

The product of its digits is 8232000, while the sum is 54.

The square root of 7725857652 is about 87896.8580325827. The cubic root of 7725857652 is about 1976.8887685214. Note that the first 3 decimals are identical.

The spelling of 7725857652 in words is "seven billion, seven hundred twenty-five million, eight hundred fifty-seven thousand, six hundred fifty-two".