90001729250 has 32 divisors (see below), whose sum is σ = 168553906560. Its totient is φ = 35985591600.

The previous prime is 90001729241. The next prime is 90001729267. The reversal of 90001729250 is 5292710009.

It is a super-2 number, since 2×90001729250² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90001729250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531461 + ... + 680039.

It is an arithmetic number, because the mean of its divisors is an integer number (5267309580).

Almost surely, 2^90001729250 is an apocalyptic number.

90001729250 is a deficient number, since it is larger than the sum of its proper divisors (78552177310).

90001729250 is a wasteful number, since it uses less digits than its factorization.

90001729250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151019 (or 151009 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The spelling of 90001729250 in words is "ninety billion, one million, seven hundred twenty-nine thousand, two hundred fifty".