25126656620 has 24 divisors (see below), whose sum is σ = 56824900944. Its totient is φ = 9277534656.

The previous prime is 25126656619. The next prime is 25126656623. The reversal of 25126656620 is 2665662152.

It is not an unprimeable number, because it can be changed into a prime (25126656623) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 48320234 + ... + 48320753.

It is an arithmetic number, because the mean of its divisors is an integer number (2367704206).

Almost surely, 2^25126656620 is an apocalyptic number.

25126656620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25126656620 is an abundant number, since it is smaller than the sum of its proper divisors (31698244324).

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

25126656620 is a wasteful number, since it uses less digits than its factorization.

25126656620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96641009 (or 96641007 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 25126656620 in words is "twenty-five billion, one hundred twenty-six million, six hundred fifty-six thousand, six hundred twenty".