7125552990 has 80 divisors (see below), whose sum is σ = 19173108240. Its totient is φ = 1898830080.

The previous prime is 7125552989. The next prime is 7125552997. The reversal of 7125552990 is 992555217.

7125552990 is a `hidden beast` number, since 7 + 1 + 2 + 5 + 552 + 9 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7125552997) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1892710 + ... + 1896470.

It is an arithmetic number, because the mean of its divisors is an integer number (239663853).

Almost surely, 2^7125552990 is an apocalyptic number.

7125552990 is an abundant number, since it is smaller than the sum of its proper divisors (12047555250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7125552990 is a wasteful number, since it uses less digits than its factorization.

7125552990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119 (or 6110 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The square root of 7125552990 is about 84412.9906471747. The cubic root of 7125552990 is about 1924.3003464006.

The spelling of 7125552990 in words is "seven billion, one hundred twenty-five million, five hundred fifty-two thousand, nine hundred ninety".