25378791290 has 32 divisors (see below), whose sum is σ = 45840530880. Its totient is φ = 10116296064.

The previous prime is 25378791253. The next prime is 25378791341. The reversal of 25378791290 is 9219787352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6619214 + ... + 6623046.

It is an arithmetic number, because the mean of its divisors is an integer number (1432516590).

Almost surely, 2^25378791290 is an apocalyptic number.

25378791290 is a deficient number, since it is larger than the sum of its proper divisors (20461739590).

25378791290 is a wasteful number, since it uses less digits than its factorization.

25378791290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 25378791290 in words is "twenty-five billion, three hundred seventy-eight million, seven hundred ninety-one thousand, two hundred ninety".