425970091 has 4 divisors (see below), whose sum is σ = 426069112. Its totient is φ = 425871072.

The previous prime is 425970053. The next prime is 425970131. The reversal of 425970091 is 190079524.

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 425970091 - 2⁷ = 425969963 is a prime.

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 425970091.

It is not an unprimeable number, because it can be changed into a prime (425970031) 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, 42750 + ... + 51763.

It is an arithmetic number, because the mean of its divisors is an integer number (106517278).

Almost surely, 2^425970091 is an apocalyptic number.

425970091 is a deficient number, since it is larger than the sum of its proper divisors (99021).

425970091 is an equidigital number, since it uses as much as digits as its factorization.

425970091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99020.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 425970091 is about 20639.0428799400. The cubic root of 425970091 is about 752.4189107001.

The spelling of 425970091 in words is "four hundred twenty-five million, nine hundred seventy thousand, ninety-one".