42420523225 has 36 divisors (see below), whose sum is σ = 56762255872. Its totient is φ = 31413492000.

The previous prime is 42420523219. The next prime is 42420523237. The reversal of 42420523225 is 52232502424.

42420523225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42420523225 - 2³ = 42420523217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 358240 + ... + 461710.

Almost surely, 2^42420523225 is an apocalyptic number.

It is an amenable number.

42420523225 is a deficient number, since it is larger than the sum of its proper divisors (14341732647).

42420523225 is a wasteful number, since it uses less digits than its factorization.

42420523225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103558 (or 103530 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The spelling of 42420523225 in words is "forty-two billion, four hundred twenty million, five hundred twenty-three thousand, two hundred twenty-five".