1601061525 has 72 divisors (see below), whose sum is σ = 3421477440. Its totient is φ = 731898720.

The previous prime is 1601061523. The next prime is 1601061559. The reversal of 1601061525 is 5251601061.

It is a happy number.

1601061525 is a `hidden beast` number, since 1 + 601 + 0 + 6 + 1 + 52 + 5 = 666.

It is not a de Polignac number, because 1601061525 - 2¹ = 1601061523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601061523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8872 + ... + 57278.

It is an arithmetic number, because the mean of its divisors is an integer number (47520520).

Almost surely, 2^1601061525 is an apocalyptic number.

1601061525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1601061525 is an abundant number, since it is smaller than the sum of its proper divisors (1820415915).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601061525 is a wasteful number, since it uses less digits than its factorization.

1601061525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48440 (or 48422 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1601061525 is about 40013.2668623795. The cubic root of 1601061525 is about 1169.8656979308.

Adding to 1601061525 its reverse (5251601061), we get a palindrome (6852662586).

The spelling of 1601061525 in words is "one billion, six hundred one million, sixty-one thousand, five hundred twenty-five".