990126225 has 36 divisors (see below), whose sum is σ = 1934651472. Its totient is φ = 480060000.

The previous prime is 990126211. The next prime is 990126281. The reversal of 990126225 is 522621099.

It is a happy number.

It is not a de Polignac number, because 990126225 - 2⁴ = 990126209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990126225.

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, 197551 + ... + 202500.

Almost surely, 2^990126225 is an apocalyptic number.

It is an amenable number.

990126225 is a deficient number, since it is larger than the sum of its proper divisors (944525247).

990126225 is a wasteful number, since it uses less digits than its factorization.

990126225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400078 (or 400070 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 990126225 is about 31466.2712280944. The cubic root of 990126225 is about 996.6978494710.

The spelling of 990126225 in words is "nine hundred ninety million, one hundred twenty-six thousand, two hundred twenty-five".