425909420802 has 12 divisors (see below), whose sum is σ = 922803745110. Its totient is φ = 141969806928.

The previous prime is 425909420801. The next prime is 425909420819. The reversal of 425909420802 is 208024909524.

It can be written as a sum of positive squares in only one way, i.e., 228781412721 + 197128008081 = 478311^2 + 443991^2 .

It is a super-2 number, since 2×425909420802² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (425909420801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11830817227 + ... + 11830817262.

Almost surely, 2^425909420802 is an apocalyptic number.

425909420802 is an abundant number, since it is smaller than the sum of its proper divisors (496894324308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425909420802 is a wasteful number, since it uses less digits than its factorization.

425909420802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23661634497 (or 23661634494 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 425909420802 in words is "four hundred twenty-five billion, nine hundred nine million, four hundred twenty thousand, eight hundred two".