25022355542 has 4 divisors (see below), whose sum is σ = 37533533316. Its totient is φ = 12511177770.

The previous prime is 25022355541. The next prime is 25022355551. The reversal of 25022355542 is 24555322052.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25022355542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25022355541) 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 as a sum of consecutive naturals, namely, 6255588884 + ... + 6255588887.

It is an arithmetic number, because the mean of its divisors is an integer number (9383383329).

Almost surely, 2^25022355542 is an apocalyptic number.

25022355542 is a deficient number, since it is larger than the sum of its proper divisors (12511177774).

25022355542 is a wasteful number, since it uses less digits than its factorization.

25022355542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12511177773.

The product of its (nonzero) digits is 120000, while the sum is 35.

Adding to 25022355542 its reverse (24555322052), we get a palindrome (49577677594).

The spelling of 25022355542 in words is "twenty-five billion, twenty-two million, three hundred fifty-five thousand, five hundred forty-two".