25287223998 has 16 divisors (see below), whose sum is σ = 50836494096. Its totient is φ = 8385400320.

The previous prime is 25287223979. The next prime is 25287223999. The reversal of 25287223998 is 89932278252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287223999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10917333 + ... + 10919648.

It is an arithmetic number, because the mean of its divisors is an integer number (3177280881).

Almost surely, 2^25287223998 is an apocalyptic number.

25287223998 is an abundant number, since it is smaller than the sum of its proper divisors (25549270098).

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

25287223998 is a wasteful number, since it uses less digits than its factorization.

25287223998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21837179.

The product of its digits is 8709120, while the sum is 57.

The spelling of 25287223998 in words is "twenty-five billion, two hundred eighty-seven million, two hundred twenty-three thousand, nine hundred ninety-eight".