42145363025 has 24 divisors (see below), whose sum is σ = 52668631224. Its totient is φ = 33453849600.

The previous prime is 42145363021. The next prime is 42145363061. The reversal of 42145363025 is 52036354124.

It can be written as a sum of positive squares in 12 ways, for example, as 3577116481 + 38568246544 = 59809^2 + 196388^2 .

It is not a de Polignac number, because 42145363025 - 2² = 42145363021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42145363021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1656299 + ... + 1681551.

It is an arithmetic number, because the mean of its divisors is an integer number (2194526301).

Almost surely, 2^42145363025 is an apocalyptic number.

It is an amenable number.

42145363025 is a deficient number, since it is larger than the sum of its proper divisors (10523268199).

42145363025 is a wasteful number, since it uses less digits than its factorization.

42145363025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25781 (or 25776 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 42145363025 in words is "forty-two billion, one hundred forty-five million, three hundred sixty-three thousand, twenty-five".