25850619020 has 48 divisors (see below), whose sum is σ = 54854966880. Its totient is φ = 10232226816.

The previous prime is 25850619017. The next prime is 25850619029. The reversal of 25850619020 is 2091605852.

It is not an unprimeable number, because it can be changed into a prime (25850619029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444286 + ... + 1462074.

It is an arithmetic number, because the mean of its divisors is an integer number (1142811810).

Almost surely, 2^25850619020 is an apocalyptic number.

25850619020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25850619020 is an abundant number, since it is smaller than the sum of its proper divisors (29004347860).

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

25850619020 is a wasteful number, since it uses less digits than its factorization.

25850619020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18554 (or 18552 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 25850619020 in words is "twenty-five billion, eight hundred fifty million, six hundred nineteen thousand, twenty".