25120054542 has 16 divisors (see below), whose sum is σ = 54807391872. Its totient is φ = 7612137720.

The previous prime is 25120054523. The next prime is 25120054549. The reversal of 25120054542 is 24545002152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25120054549) 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, 190303378 + ... + 190303509.

It is an arithmetic number, because the mean of its divisors is an integer number (3425461992).

Almost surely, 2^25120054542 is an apocalyptic number.

25120054542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25120054542 is an abundant number, since it is smaller than the sum of its proper divisors (29687337330).

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

25120054542 is a wasteful number, since it uses less digits than its factorization.

25120054542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380606903.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 25120054542 its reverse (24545002152), we get a palindrome (49665056694).

The spelling of 25120054542 in words is "twenty-five billion, one hundred twenty million, fifty-four thousand, five hundred forty-two".