25458142512 has 120 divisors (see below), whose sum is σ = 72608668720. Its totient is φ = 7680499200.

The previous prime is 25458142499. The next prime is 25458142571. The reversal of 25458142512 is 21524185452.

It is a super-2 number, since 2×25458142512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1320462 + ... + 1339602.

Almost surely, 2^25458142512 is an apocalyptic number.

25458142512 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 25458142512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36304334360).

25458142512 is an abundant number, since it is smaller than the sum of its proper divisors (47150526208).

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

25458142512 is a wasteful number, since it uses less digits than its factorization.

25458142512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19403 (or 19386 counting only the distinct ones).

The product of its digits is 128000, while the sum is 39.

The spelling of 25458142512 in words is "twenty-five billion, four hundred fifty-eight million, one hundred forty-two thousand, five hundred twelve".