425804917501 has 4 divisors (see below), whose sum is σ = 425807429404. Its totient is φ = 425802405600.

The previous prime is 425804917477. The next prime is 425804917583. The reversal of 425804917501 is 105719408524.

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 301457000601 + 124347916900 = 549051^2 + 352630^2 .

It is a cyclic number.

It is not a de Polignac number, because 425804917501 - 2¹⁹ = 425804393213 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 (425804917201) 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, 981720 + ... + 1347361.

It is an arithmetic number, because the mean of its divisors is an integer number (106451857351).

Almost surely, 2^425804917501 is an apocalyptic number.

It is an amenable number.

425804917501 is a deficient number, since it is larger than the sum of its proper divisors (2511903).

425804917501 is a wasteful number, since it uses less digits than its factorization.

425804917501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511902.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 425804917501 in words is "four hundred twenty-five billion, eight hundred four million, nine hundred seventeen thousand, five hundred one".