25707524652 has 72 divisors (see below), whose sum is σ = 66009015072. Its totient is φ = 8434272000.

The previous prime is 25707524651. The next prime is 25707524669. The reversal of 25707524652 is 25642570752.

25707524652 is a `hidden beast` number, since 2 + 5 + 70 + 7 + 524 + 6 + 52 = 666.

It is a super-2 number, since 2×25707524652² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25707524598 and 25707524607.

It is not an unprimeable number, because it can be changed into a prime (25707524651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1568902 + ... + 1585202.

It is an arithmetic number, because the mean of its divisors is an integer number (916791876).

Almost surely, 2^25707524652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25707524652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33004507536).

25707524652 is an abundant number, since it is smaller than the sum of its proper divisors (40301490420).

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

25707524652 is a wasteful number, since it uses less digits than its factorization.

25707524652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16999 (or 16994 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 45.

The spelling of 25707524652 in words is "twenty-five billion, seven hundred seven million, five hundred twenty-four thousand, six hundred fifty-two".