425122491 has 4 divisors (see below), whose sum is σ = 566829992. Its totient is φ = 283414992.

The previous prime is 425122471. The next prime is 425122493. The reversal of 425122491 is 194221524.

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

It is not a de Polignac number, because 425122491 - 2⁵ = 425122459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425122493) 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, 70853746 + ... + 70853751.

It is an arithmetic number, because the mean of its divisors is an integer number (141707498).

Almost surely, 2^425122491 is an apocalyptic number.

425122491 is a deficient number, since it is larger than the sum of its proper divisors (141707501).

425122491 is a wasteful number, since it uses less digits than its factorization.

425122491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141707500.

The product of its digits is 5760, while the sum is 30.

The square root of 425122491 is about 20618.4987571840. The cubic root of 425122491 is about 751.9195221661.

The spelling of 425122491 in words is "four hundred twenty-five million, one hundred twenty-two thousand, four hundred ninety-one".