25712537600 has 78 divisors (see below), whose sum is σ = 63759563100. Its totient is φ = 10284974080.

The previous prime is 25712537581. The next prime is 25712537623. The reversal of 25712537600 is 673521752.

It is a super-2 number, since 2×25712537600² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23150 + ... + 227949.

Almost surely, 2^25712537600 is an apocalyptic number.

25712537600 is a gapful number since it is divisible by the number (20) 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 25712537600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31879781550).

25712537600 is an abundant number, since it is smaller than the sum of its proper divisors (38047025500).

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

25712537600 is an equidigital number, since it uses as much as digits as its factorization.

25712537600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251133 (or 251106 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 25712537600 in words is "twenty-five billion, seven hundred twelve million, five hundred thirty-seven thousand, six hundred".