861093425 has 6 divisors (see below), whose sum is σ = 1067755878. Its totient is φ = 688874720.

The previous prime is 861093421. The next prime is 861093427. The reversal of 861093425 is 524390168.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 267878689 + 593214736 = 16367^2 + 24356^2 .

It is not a de Polignac number, because 861093425 - 2² = 861093421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861093421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17221844 + ... + 17221893.

It is an arithmetic number, because the mean of its divisors is an integer number (177959313).

Almost surely, 2^861093425 is an apocalyptic number.

It is an amenable number.

861093425 is a deficient number, since it is larger than the sum of its proper divisors (206662453).

861093425 is a wasteful number, since it uses less digits than its factorization.

861093425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34443747 (or 34443742 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 861093425 is about 29344.3934168011. The cubic root of 861093425 is about 951.3713988280.

The spelling of 861093425 in words is "eight hundred sixty-one million, ninety-three thousand, four hundred twenty-five".