25157881950 has 48 divisors (see below), whose sum is σ = 65675320320. Its totient is φ = 6355674720.

The previous prime is 25157881939. The next prime is 25157881951. The reversal of 25157881950 is 5918875152.

It is a junction number, because it is equal to n+sod(n) for n = 25157881893 and 25157881902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25157881951) 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 23 ways as a sum of consecutive naturals, for example, 4410814 + ... + 4416513.

It is an arithmetic number, because the mean of its divisors is an integer number (1368235840).

Almost surely, 2^25157881950 is an apocalyptic number.

25157881950 is an abundant number, since it is smaller than the sum of its proper divisors (40517438370).

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

25157881950 is a wasteful number, since it uses less digits than its factorization.

25157881950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827361 (or 8827356 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 51.

The spelling of 25157881950 in words is "twenty-five billion, one hundred fifty-seven million, eight hundred eighty-one thousand, nine hundred fifty".