425641537 has 4 divisors (see below), whose sum is σ = 425724336. Its totient is φ = 425558740.

The previous prime is 425641523. The next prime is 425641561. The reversal of 425641537 is 735146524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425641537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425641496 and 425641505.

It is not an unprimeable number, because it can be changed into a prime (425641037) 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, 33139 + ... + 44152.

It is an arithmetic number, because the mean of its divisors is an integer number (106431084).

Almost surely, 2^425641537 is an apocalyptic number.

It is an amenable number.

425641537 is a deficient number, since it is larger than the sum of its proper divisors (82799).

425641537 is an equidigital number, since it uses as much as digits as its factorization.

425641537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82798.

The product of its digits is 100800, while the sum is 37.

The square root of 425641537 is about 20631.0818184602. The cubic root of 425641537 is about 752.2254121160.

The spelling of 425641537 in words is "four hundred twenty-five million, six hundred forty-one thousand, five hundred thirty-seven".