25420521112 has 16 divisors (see below), whose sum is σ = 54472545360. Its totient is φ = 10894509024.

The previous prime is 25420521101. The next prime is 25420521157. The reversal of 25420521112 is 21112502452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226968883 + ... + 226968994.

It is an arithmetic number, because the mean of its divisors is an integer number (3404534085).

Almost surely, 2^25420521112 is an apocalyptic number.

It is an amenable number.

25420521112 is an abundant number, since it is smaller than the sum of its proper divisors (29052024248).

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

25420521112 is a wasteful number, since it uses less digits than its factorization.

25420521112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453937890 (or 453937886 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 25420521112 in words is "twenty-five billion, four hundred twenty million, five hundred twenty-one thousand, one hundred twelve".