25486127392 has 72 divisors (see below), whose sum is σ = 55359215100. Its totient is φ = 11541066240.

The previous prime is 25486127377. The next prime is 25486127419. The reversal of 25486127392 is 29372168452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20461585936 + 5024541456 = 143044^2 + 70884^2 .

It is a super-4 number, since 4×25486127392⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029334 + ... + 1053802.

Almost surely, 2^25486127392 is an apocalyptic number.

25486127392 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 25486127392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27679607550).

25486127392 is an abundant number, since it is smaller than the sum of its proper divisors (29873087708).

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

25486127392 is a wasteful number, since it uses less digits than its factorization.

25486127392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24770 (or 24751 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The spelling of 25486127392 in words is "twenty-five billion, four hundred eighty-six million, one hundred twenty-seven thousand, three hundred ninety-two".