525404666642 has 32 divisors (see below), whose sum is σ = 819398099520. Its totient is φ = 252366587200.

The previous prime is 525404666621. The next prime is 525404666653. The reversal of 525404666642 is 246666404525.

It is a super-2 number, since 2×525404666642² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9370892 + ... + 9426792.

It is an arithmetic number, because the mean of its divisors is an integer number (25606190610).

Almost surely, 2^525404666642 is an apocalyptic number.

525404666642 is a deficient number, since it is larger than the sum of its proper divisors (293993432878).

525404666642 is a wasteful number, since it uses less digits than its factorization.

525404666642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56746.

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 525404666642 in words is "five hundred twenty-five billion, four hundred four million, six hundred sixty-six thousand, six hundred forty-two".