425461561 has 12 divisors (see below), whose sum is σ = 495325668. Its totient is φ = 364385952.

The previous prime is 425461559. The next prime is 425461637. The reversal of 425461561 is 165164524.

It can be written as a sum of positive squares in 2 ways, for example, as 158760000 + 266701561 = 12600^2 + 16331^2 .

It is not a de Polignac number, because 425461561 - 2¹ = 425461559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425461501) 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, 75535 + ... + 80971.

It is an arithmetic number, because the mean of its divisors is an integer number (41277139).

Almost surely, 2^425461561 is an apocalyptic number.

It is an amenable number.

425461561 is a deficient number, since it is larger than the sum of its proper divisors (69864107).

425461561 is a wasteful number, since it uses less digits than its factorization.

425461561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048 (or 7041 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 425461561 is about 20626.7195889216. The cubic root of 425461561 is about 752.1193748406.

The spelling of 425461561 in words is "four hundred twenty-five million, four hundred sixty-one thousand, five hundred sixty-one".