425020387 has 4 divisors (see below), whose sum is σ = 463658616. Its totient is φ = 386382160.

The previous prime is 425020373. The next prime is 425020403. The reversal of 425020387 is 783020524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425020387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425020307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19319098 + ... + 19319119.

It is an arithmetic number, because the mean of its divisors is an integer number (115914654).

Almost surely, 2^425020387 is an apocalyptic number.

425020387 is a deficient number, since it is larger than the sum of its proper divisors (38638229).

425020387 is a wasteful number, since it uses less digits than its factorization.

425020387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38638228.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 425020387 is about 20616.0225795375. The cubic root of 425020387 is about 751.8593198011.

The spelling of 425020387 in words is "four hundred twenty-five million, twenty thousand, three hundred eighty-seven".