90075815425 has 6 divisors (see below), whose sum is σ = 111694011158. Its totient is φ = 72060652320.

The previous prime is 90075815399. The next prime is 90075815437. The reversal of 90075815425 is 52451857009.

It can be written as a sum of positive squares in 3 ways, for example, as 22624973056 + 67450842369 = 150416^2 + 259713^2 .

It is not a de Polignac number, because 90075815425 - 2¹³ = 90075807233 is a prime.

It is a super-2 number, since 2×90075815425² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1801516284 + ... + 1801516333.

Almost surely, 2^90075815425 is an apocalyptic number.

It is an amenable number.

90075815425 is a deficient number, since it is larger than the sum of its proper divisors (21618195733).

90075815425 is a wasteful number, since it uses less digits than its factorization.

90075815425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603032627 (or 3603032622 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 90075815425 in words is "ninety billion, seventy-five million, eight hundred fifteen thousand, four hundred twenty-five".