425597780 has 12 divisors (see below), whose sum is σ = 893755380. Its totient is φ = 170239104.

The previous prime is 425597759. The next prime is 425597807. The reversal of 425597780 is 87795524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 324072004 + 101525776 = 18002^2 + 10076^2 .

It is a super-2 number, since 2×425597780² = 362266940681856800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10639925 + ... + 10639964.

It is an arithmetic number, because the mean of its divisors is an integer number (74479615).

Almost surely, 2^425597780 is an apocalyptic number.

It is an amenable number.

425597780 is an abundant number, since it is smaller than the sum of its proper divisors (468157600).

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

425597780 is a wasteful number, since it uses less digits than its factorization.

425597780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21279898 (or 21279896 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 425597780 is about 20630.0213281518. The cubic root of 425597780 is about 752.1996343567.

The spelling of 425597780 in words is "four hundred twenty-five million, five hundred ninety-seven thousand, seven hundred eighty".