25040124534 has 64 divisors (see below), whose sum is σ = 53884866816. Its totient is φ = 7728804864.

The previous prime is 25040124533. The next prime is 25040124563. The reversal of 25040124534 is 43542104052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040124533) 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 in 31 ways as a sum of consecutive naturals, for example, 7057749 + ... + 7061295.

It is an arithmetic number, because the mean of its divisors is an integer number (841951044).

Almost surely, 2^25040124534 is an apocalyptic number.

25040124534 is an abundant number, since it is smaller than the sum of its proper divisors (28844742282).

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

25040124534 is a wasteful number, since it uses less digits than its factorization.

25040124534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 25040124534 its reverse (43542104052), we get a palindrome (68582228586).

The spelling of 25040124534 in words is "twenty-five billion, forty million, one hundred twenty-four thousand, five hundred thirty-four".