1090200725 has 12 divisors (see below), whose sum is σ = 1377357156. Its totient is φ = 855703680.

The previous prime is 1090200721. The next prime is 1090200731. The reversal of 1090200725 is 5270020901.

It can be written as a sum of positive squares in 6 ways, for example, as 129572689 + 960628036 = 11383^2 + 30994^2 .

It is not a de Polignac number, because 1090200725 - 2² = 1090200721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1090200694 and 1090200703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090200721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410072 + ... + 412721.

It is an arithmetic number, because the mean of its divisors is an integer number (114779763).

Almost surely, 2^1090200725 is an apocalyptic number.

It is an amenable number.

1090200725 is a deficient number, since it is larger than the sum of its proper divisors (287156431).

1090200725 is an equidigital number, since it uses as much as digits as its factorization.

1090200725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822856 (or 822851 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1090200725 is about 33018.1877909736. The cubic root of 1090200725 is about 1029.2056353613.

The spelling of 1090200725 in words is "one billion, ninety million, two hundred thousand, seven hundred twenty-five".