15525055412 has 12 divisors (see below), whose sum is σ = 27207609156. Its totient is φ = 7751452800.

The previous prime is 15525055411. The next prime is 15525055417. The reversal of 15525055412 is 21455052551.

It can be written as a sum of positive squares in 2 ways, for example, as 14941639696 + 583415716 = 122236^2 + 24154^2 .

It is a super-3 number, since 3×15525055412³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15525055411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765573 + ... + 2771180.

It is an arithmetic number, because the mean of its divisors is an integer number (2267300763).

Almost surely, 2^15525055412 is an apocalyptic number.

It is an amenable number.

15525055412 is a deficient number, since it is larger than the sum of its proper divisors (11682553744).

15525055412 is a wasteful number, since it uses less digits than its factorization.

15525055412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537458 (or 5537456 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 15525055412 in words is "fifteen billion, five hundred twenty-five million, fifty-five thousand, four hundred twelve".