425289091 has 4 divisors (see below), whose sum is σ = 428637952. Its totient is φ = 421940232.

The previous prime is 425289071. The next prime is 425289097. The reversal of 425289091 is 190982524.

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

It is a cyclic number.

It is not a de Polignac number, because 425289091 - 2¹³ = 425280899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425289097) 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, 1674240 + ... + 1674493.

It is an arithmetic number, because the mean of its divisors is an integer number (107159488).

Almost surely, 2^425289091 is an apocalyptic number.

425289091 is a deficient number, since it is larger than the sum of its proper divisors (3348861).

425289091 is a wasteful number, since it uses less digits than its factorization.

425289091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348860.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 425289091 is about 20622.5384228033. The cubic root of 425289091 is about 752.0177318467.

The spelling of 425289091 in words is "four hundred twenty-five million, two hundred eighty-nine thousand, ninety-one".