425640052 has 24 divisors (see below), whose sum is σ = 785685600. Its totient is φ = 201204576.

The previous prime is 425640049. The next prime is 425640073. The reversal of 425640052 is 250046524.

It is a self number, because there is not a number n which added to its sum of digits gives 425640052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33183 + ... + 44185.

It is an arithmetic number, because the mean of its divisors is an integer number (32736900).

Almost surely, 2^425640052 is an apocalyptic number.

It is an amenable number.

425640052 is a deficient number, since it is larger than the sum of its proper divisors (360045548).

425640052 is a wasteful number, since it uses less digits than its factorization.

425640052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11535 (or 11533 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 425640052 is about 20631.0458290412. The cubic root of 425640052 is about 752.2245373142.

Adding to 425640052 its reverse (250046524), we get a palindrome (675686576).

The spelling of 425640052 in words is "four hundred twenty-five million, six hundred forty thousand, fifty-two".