425145961 has 8 divisors (see below), whose sum is σ = 444248640. Its totient is φ = 406094832.

The previous prime is 425145949. The next prime is 425145967. The reversal of 425145961 is 169541524.

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 425145961 - 2¹⁵ = 425113193 is a prime.

It is a super-2 number, since 2×425145961² = 361498176309227042, which contains 22 as substring.

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 425145961.

It is not an unprimeable number, because it can be changed into a prime (425145967) 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, 4491 + ... + 29503.

It is an arithmetic number, because the mean of its divisors is an integer number (55531080).

Almost surely, 2^425145961 is an apocalyptic number.

It is an amenable number.

425145961 is a deficient number, since it is larger than the sum of its proper divisors (19102679).

425145961 is a wasteful number, since it uses less digits than its factorization.

425145961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25775.

The product of its digits is 43200, while the sum is 37.

The square root of 425145961 is about 20619.0678984284. The cubic root of 425145961 is about 751.9333591400.

The spelling of 425145961 in words is "four hundred twenty-five million, one hundred forty-five thousand, nine hundred sixty-one".