25978796950 has 24 divisors (see below), whose sum is σ = 48459847032. Its totient is φ = 10361565120.

The previous prime is 25978796923. The next prime is 25978796971. The reversal of 25978796950 is 5969787952.

It is a super-3 number, since 3×25978796950³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 731319 + ... + 766018.

It is an arithmetic number, because the mean of its divisors is an integer number (2019160293).

Almost surely, 2^25978796950 is an apocalyptic number.

25978796950 is a deficient number, since it is larger than the sum of its proper divisors (22481050082).

25978796950 is a wasteful number, since it uses less digits than its factorization.

25978796950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497696 (or 1497691 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 67.

The spelling of 25978796950 in words is "twenty-five billion, nine hundred seventy-eight million, seven hundred ninety-six thousand, nine hundred fifty".