25042131111 has 8 divisors (see below), whose sum is σ = 34466589184. Its totient is φ = 16156213560.

The previous prime is 25042131097. The next prime is 25042131133. The reversal of 25042131111 is 11113124052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25042131111 - 2²¹ = 25040033959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042131211) 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, 134635021 + ... + 134635206.

It is an arithmetic number, because the mean of its divisors is an integer number (4308323648).

Almost surely, 2^25042131111 is an apocalyptic number.

25042131111 is a deficient number, since it is larger than the sum of its proper divisors (9424458073).

25042131111 is a wasteful number, since it uses less digits than its factorization.

25042131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269270261.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 25042131111 its reverse (11113124052), we get a palindrome (36155255163).

The spelling of 25042131111 in words is "twenty-five billion, forty-two million, one hundred thirty-one thousand, one hundred eleven".