201525104404 has 12 divisors (see below), whose sum is σ = 379797312244. Its totient is φ = 93011586624.

The previous prime is 201525104323. The next prime is 201525104411. The reversal of 201525104404 is 404401525102.

It can be written as a sum of positive squares in 2 ways, for example, as 74803344004 + 126721760400 = 273502^2 + 355980^2 .

It is a super-2 number, since 2×201525104404² (a number of 23 digits) 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, 1937741337 + ... + 1937741440.

Almost surely, 2^201525104404 is an apocalyptic number.

It is an amenable number.

201525104404 is a deficient number, since it is larger than the sum of its proper divisors (178272207840).

201525104404 is a wasteful number, since it uses less digits than its factorization.

201525104404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875482794 (or 3875482792 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 201525104404 its reverse (404401525102), we get a palindrome (605926629506).

The spelling of 201525104404 in words is "two hundred one billion, five hundred twenty-five million, one hundred four thousand, four hundred four".