25213123342 has 32 divisors (see below), whose sum is σ = 44215248384. Its totient is φ = 10665943200.

The previous prime is 25213123339. The next prime is 25213123373. The reversal of 25213123342 is 24332131252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25213123342.

It is a congruent 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, 654634 + ... + 692077.

It is an arithmetic number, because the mean of its divisors is an integer number (1381726512).

Almost surely, 2^25213123342 is an apocalyptic number.

25213123342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25213123342 is a deficient number, since it is larger than the sum of its proper divisors (19002125042).

25213123342 is a wasteful number, since it uses less digits than its factorization.

25213123342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346784.

The product of its digits is 8640, while the sum is 28.

Adding to 25213123342 its reverse (24332131252), we get a palindrome (49545254594).

The spelling of 25213123342 in words is "twenty-five billion, two hundred thirteen million, one hundred twenty-three thousand, three hundred forty-two".