25134521412 has 192 divisors, whose sum is σ = 82888243200. Its totient is φ = 5709035520.

The previous prime is 25134521407. The next prime is 25134521413. The reversal of 25134521412 is 21412543152.

It is a super-2 number, since 2×25134521412² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25134521412.

It is not an unprimeable number, because it can be changed into a prime (25134521413) 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, 173164 + ... + 283292.

It is an arithmetic number, because the mean of its divisors is an integer number (431709600).

Almost surely, 2^25134521412 is an apocalyptic number.

25134521412 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 25134521412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41444121600).

25134521412 is an abundant number, since it is smaller than the sum of its proper divisors (57753721788).

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

25134521412 is a wasteful number, since it uses less digits than its factorization.

25134521412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110186 (or 110184 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The spelling of 25134521412 in words is "twenty-five billion, one hundred thirty-four million, five hundred twenty-one thousand, four hundred twelve".