1425385261 has 8 divisors (see below), whose sum is σ = 1439638200. Its totient is φ = 1411153920.

The previous prime is 1425385253. The next prime is 1425385303. The reversal of 1425385261 is 1625835241.

It can be written as a sum of positive squares in 4 ways, for example, as 199685161 + 1225700100 = 14131^2 + 35010^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425385261 - 2³ = 1425385253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425385261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425385201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148941 + ... + 158221.

It is an arithmetic number, because the mean of its divisors is an integer number (179954775).

Almost surely, 2^1425385261 is an apocalyptic number.

It is an amenable number.

1425385261 is a deficient number, since it is larger than the sum of its proper divisors (14252939).

1425385261 is a wasteful number, since it uses less digits than its factorization.

1425385261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799.

The product of its digits is 57600, while the sum is 37.

The square root of 1425385261 is about 37754.2747381008. The cubic root of 1425385261 is about 1125.4099604814.

The spelling of 1425385261 in words is "one billion, four hundred twenty-five million, three hundred eighty-five thousand, two hundred sixty-one".