425043661 has 8 divisors (see below), whose sum is σ = 511330880. Its totient is φ = 345148128.

The previous prime is 425043659. The next prime is 425043667. The reversal of 425043661 is 166340524.

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 425043661 - 2¹ = 425043659 is a prime.

It is a super-2 number, since 2×425043661² = 361324227512565842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425043667) 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, 1597776 + ... + 1598041.

It is an arithmetic number, because the mean of its divisors is an integer number (63916360).

Almost surely, 2^425043661 is an apocalyptic number.

It is an amenable number.

425043661 is a deficient number, since it is larger than the sum of its proper divisors (86287219).

425043661 is a wasteful number, since it uses less digits than its factorization.

425043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195843.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 425043661 is about 20616.5870356856. The cubic root of 425043661 is about 751.8730434208.

The spelling of 425043661 in words is "four hundred twenty-five million, forty-three thousand, six hundred sixty-one".