25293196390 has 32 divisors (see below), whose sum is σ = 56761876224. Its totient is φ = 7883593440.

The previous prime is 25293196373. The next prime is 25293196399. The reversal of 25293196390 is 9369139252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25293196399) 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 15 ways as a sum of consecutive naturals, for example, 16423384 + ... + 16424923.

It is an arithmetic number, because the mean of its divisors is an integer number (1773808632).

Almost surely, 2^25293196390 is an apocalyptic number.

25293196390 is an abundant number, since it is smaller than the sum of its proper divisors (31468679834).

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

25293196390 is a wasteful number, since it uses less digits than its factorization.

25293196390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32848332.

The product of its (nonzero) digits is 787320, while the sum is 49.

The spelling of 25293196390 in words is "twenty-five billion, two hundred ninety-three million, one hundred ninety-six thousand, three hundred ninety".