25335240402 has 16 divisors (see below), whose sum is σ = 50676514560. Its totient is φ = 8444074512.

The previous prime is 25335240383. The next prime is 25335240419. The reversal of 25335240402 is 20404253352.

It is a self number, because there is not a number n which added to its sum of digits gives 25335240402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195877 + ... + 298392.

It is an arithmetic number, because the mean of its divisors is an integer number (3167282160).

Almost surely, 2^25335240402 is an apocalyptic number.

25335240402 is an abundant number, since it is smaller than the sum of its proper divisors (25341274158).

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

25335240402 is a wasteful number, since it uses less digits than its factorization.

25335240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502817.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 25335240402 its reverse (20404253352), we get a palindrome (45739493754).

The spelling of 25335240402 in words is "twenty-five billion, three hundred thirty-five million, two hundred forty thousand, four hundred two".