25715456052 has 192 divisors, whose sum is σ = 72098885376. Its totient is φ = 7030333440.

The previous prime is 25715456051. The next prime is 25715456057. The reversal of 25715456052 is 25065451752.

It is a super-2 number, since 2×25715456052² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25715455995 and 25715456013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715456051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39380158 + ... + 39380810.

It is an arithmetic number, because the mean of its divisors is an integer number (375515028).

Almost surely, 2^25715456052 is an apocalyptic number.

25715456052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25715456052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36049442688).

25715456052 is an abundant number, since it is smaller than the sum of its proper divisors (46383429324).

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

25715456052 is a wasteful number, since it uses less digits than its factorization.

25715456052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 25715456052 in words is "twenty-five billion, seven hundred fifteen million, four hundred fifty-six thousand, fifty-two".