611745625 has 20 divisors (see below), whose sum is σ = 783114948. Its totient is φ = 477440000.

The previous prime is 611745613. The next prime is 611745647. The reversal of 611745625 is 526547116.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 611721289 + 24336 = 24733^2 + 156^2 .

It is not a de Polignac number, because 611745625 - 2⁵ = 611745593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13689 + ... + 37561.

Almost surely, 2^611745625 is an apocalyptic number.

It is an amenable number.

611745625 is a deficient number, since it is larger than the sum of its proper divisors (171369323).

611745625 is an equidigital number, since it uses as much as digits as its factorization.

611745625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23934 (or 23919 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 611745625 is about 24733.4919693924. The cubic root of 611745625 is about 848.9008283614.

The spelling of 611745625 in words is "six hundred eleven million, seven hundred forty-five thousand, six hundred twenty-five".