25663126380 has 24 divisors (see below), whose sum is σ = 71856754032. Its totient is φ = 6843500352.

The previous prime is 25663126367. The next prime is 25663126381. The reversal of 25663126380 is 8362136652.

It is not an unprimeable number, because it can be changed into a prime (25663126381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213859327 + ... + 213859446.

It is an arithmetic number, because the mean of its divisors is an integer number (2994031418).

Almost surely, 2^25663126380 is an apocalyptic number.

25663126380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25663126380 is an abundant number, since it is smaller than the sum of its proper divisors (46193627652).

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

25663126380 is a wasteful number, since it uses less digits than its factorization.

25663126380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427718785 (or 427718783 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 25663126380 in words is "twenty-five billion, six hundred sixty-three million, one hundred twenty-six thousand, three hundred eighty".