25043121134 has 4 divisors (see below), whose sum is σ = 37564681704. Its totient is φ = 12521560566.

The previous prime is 25043121113. The next prime is 25043121137. The reversal of 25043121134 is 43112134052.

It is a happy number.

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

It is a super-2 number, since 2×25043121134² (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 (25043121137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260780282 + ... + 6260780285.

It is an arithmetic number, because the mean of its divisors is an integer number (9391170426).

Almost surely, 2^25043121134 is an apocalyptic number.

25043121134 is a deficient number, since it is larger than the sum of its proper divisors (12521560570).

25043121134 is a wasteful number, since it uses less digits than its factorization.

25043121134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521560569.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 25043121134 its reverse (43112134052), we get a palindrome (68155255186).

The spelling of 25043121134 in words is "twenty-five billion, forty-three million, one hundred twenty-one thousand, one hundred thirty-four".