425100391 has 4 divisors (see below), whose sum is σ = 425339800. Its totient is φ = 424860984.

The previous prime is 425100373. The next prime is 425100409. The reversal of 425100391 is 193001524.

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

It is an interprime number because it is at equal distance from previous prime (425100373) and next prime (425100409).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425100391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425100301) 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, 117021 + ... + 120598.

It is an arithmetic number, because the mean of its divisors is an integer number (106334950).

Almost surely, 2^425100391 is an apocalyptic number.

425100391 is a deficient number, since it is larger than the sum of its proper divisors (239409).

425100391 is a wasteful number, since it uses less digits than its factorization.

425100391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239408.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 425100391 is about 20617.9628237127. The cubic root of 425100391 is about 751.9064924239.

The spelling of 425100391 in words is "four hundred twenty-five million, one hundred thousand, three hundred ninety-one".