425670261 has 8 divisors (see below), whose sum is σ = 576864864. Its totient is φ = 279127920.

The previous prime is 425670253. The next prime is 425670317. The reversal of 425670261 is 162076524.

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

It is not a de Polignac number, because 425670261 - 2³ = 425670253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425670251) 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, 1162851 + ... + 1163216.

It is an arithmetic number, because the mean of its divisors is an integer number (72108108).

Almost surely, 2^425670261 is an apocalyptic number.

It is an amenable number.

425670261 is a deficient number, since it is larger than the sum of its proper divisors (151194603).

425670261 is a wasteful number, since it uses less digits than its factorization.

425670261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326131.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 425670261 is about 20631.7779408368. Note that the first 3 decimals coincide. The cubic root of 425670261 is about 752.2423327991.

The spelling of 425670261 in words is "four hundred twenty-five million, six hundred seventy thousand, two hundred sixty-one".