25541423442 has 32 divisors (see below), whose sum is σ = 56772884160. Its totient is φ = 8511683040.

The previous prime is 25541423429. The next prime is 25541423459. The reversal of 25541423442 is 24432414552.

25541423442 is a `hidden beast` number, since 2 + 5 + 5 + 414 + 234 + 4 + 2 = 666.

It is a super-2 number, since 2×25541423442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25541423397 and 25541423406.

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 15 ways as a sum of consecutive naturals, for example, 167317 + ... + 281207.

It is an arithmetic number, because the mean of its divisors is an integer number (1774152630).

Almost surely, 2^25541423442 is an apocalyptic number.

25541423442 is an abundant number, since it is smaller than the sum of its proper divisors (31231460718).

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

25541423442 is a wasteful number, since it uses less digits than its factorization.

25541423442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118055 (or 118049 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

Adding to 25541423442 its reverse (24432414552), we get a palindrome (49973837994).

The spelling of 25541423442 in words is "twenty-five billion, five hundred forty-one million, four hundred twenty-three thousand, four hundred forty-two".