25121040112 has 40 divisors (see below), whose sum is σ = 56760380000. Its totient is φ = 10766157696.

The previous prime is 25121040107. The next prime is 25121040143. The reversal of 25121040112 is 21104012152.

It is a self number, because there is not a number n which added to its sum of digits gives 25121040112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283237 + ... + 2294212.

It is an arithmetic number, because the mean of its divisors is an integer number (1419009500).

Almost surely, 2^25121040112 is an apocalyptic number.

It is an amenable number.

25121040112 is an abundant number, since it is smaller than the sum of its proper divisors (31639339888).

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

25121040112 is an equidigital number, since it uses as much as digits as its factorization.

25121040112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577478 (or 4577458 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 25121040112 its reverse (21104012152), we get a palindrome (46225052264).

The spelling of 25121040112 in words is "twenty-five billion, one hundred twenty-one million, forty thousand, one hundred twelve".