25532861016 has 256 divisors, whose sum is σ = 73159511040. Its totient is φ = 7366993920.

The previous prime is 25532860963. The next prime is 25532861021. The reversal of 25532861016 is 61016823552.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147588706 + ... + 147588878.

It is an arithmetic number, because the mean of its divisors is an integer number (285779340).

Almost surely, 2^25532861016 is an apocalyptic number.

25532861016 is a gapful number since it is divisible by the number (26) 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 25532861016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36579755520).

25532861016 is an abundant number, since it is smaller than the sum of its proper divisors (47626650024).

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

25532861016 is a wasteful number, since it uses less digits than its factorization.

25532861016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 25532861016 in words is "twenty-five billion, five hundred thirty-two million, eight hundred sixty-one thousand, sixteen".