525421402 has 16 divisors (see below), whose sum is σ = 905032800. Its totient is φ = 226257840.

The previous prime is 525421399. The next prime is 525421409. The reversal of 525421402 is 204124525.

It is not an unprimeable number, because it can be changed into a prime (525421409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628077 + ... + 628912.

It is an arithmetic number, because the mean of its divisors is an integer number (56564550).

Almost surely, 2^525421402 is an apocalyptic number.

525421402 is a deficient number, since it is larger than the sum of its proper divisors (379611398).

525421402 is a wasteful number, since it uses less digits than its factorization.

525421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257021.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 525421402 is about 22922.0723757692. The cubic root of 525421402 is about 806.9301072113.

Adding to 525421402 its reverse (204124525), we get a palindrome (729545927).

The spelling of 525421402 in words is "five hundred twenty-five million, four hundred twenty-one thousand, four hundred two".