425457157 has 4 divisors (see below), whose sum is σ = 427617036. Its totient is φ = 423297280.

The previous prime is 425457143. The next prime is 425457161. The reversal of 425457157 is 751754524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 415915236 + 9541921 = 20394^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 425457157 - 2¹¹ = 425455109 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 (425457167) 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, 1079644 + ... + 1080037.

It is an arithmetic number, because the mean of its divisors is an integer number (106904259).

Almost surely, 2^425457157 is an apocalyptic number.

It is an amenable number.

425457157 is a deficient number, since it is larger than the sum of its proper divisors (2159879).

425457157 is a wasteful number, since it uses less digits than its factorization.

425457157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159878.

The product of its digits is 196000, while the sum is 40.

The square root of 425457157 is about 20626.6128339095. The cubic root of 425457157 is about 752.1167797411.

The spelling of 425457157 in words is "four hundred twenty-five million, four hundred fifty-seven thousand, one hundred fifty-seven".