201525104405 has 16 divisors (see below), whose sum is σ = 249234363840. Its totient is φ = 156337872768.

The previous prime is 201525104323. The next prime is 201525104411. The reversal of 201525104405 is 504401525102.

It is a cyclic number.

It is not a de Polignac number, because 201525104405 - 2¹⁸ = 201524842261 is a prime.

It is a super-2 number, since 2×201525104405² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 3341792 + ... + 3401561.

It is an arithmetic number, because the mean of its divisors is an integer number (15577147740).

Almost surely, 2^201525104405 is an apocalyptic number.

It is an amenable number.

201525104405 is a deficient number, since it is larger than the sum of its proper divisors (47709259435).

201525104405 is a wasteful number, since it uses less digits than its factorization.

201525104405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743540.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 201525104405 its reverse (504401525102), we get a palindrome (705926629507).

The spelling of 201525104405 in words is "two hundred one billion, five hundred twenty-five million, one hundred four thousand, four hundred five".