25140131436 has 96 divisors (see below), whose sum is σ = 69414912000. Its totient is φ = 6928927488.

The previous prime is 25140131413. The next prime is 25140131449. The reversal of 25140131436 is 63413104152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3111610 + ... + 3119678.

It is an arithmetic number, because the mean of its divisors is an integer number (723072000).

Almost surely, 2^25140131436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25140131436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34707456000).

25140131436 is an abundant number, since it is smaller than the sum of its proper divisors (44274780564).

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

25140131436 is a wasteful number, since it uses less digits than its factorization.

25140131436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391 (or 9389 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 25140131436 its reverse (63413104152), we get a palindrome (88553235588).

The spelling of 25140131436 in words is "twenty-five billion, one hundred forty million, one hundred thirty-one thousand, four hundred thirty-six".