15225474002 has 6 divisors (see below), whose sum is σ = 22838472759. Its totient is φ = 7612649750.

The previous prime is 15225473999. The next prime is 15225474053. The reversal of 15225474002 is 20047452251.

It can be written as a sum of positive squares in only one way, i.e., 7612737001 + 7612737001 = 87251^2 + 87251^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=87251.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15225474002.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 130877 + ... + 218127.

Almost surely, 2^15225474002 is an apocalyptic number.

15225474002 is a deficient number, since it is larger than the sum of its proper divisors (7612998757).

15225474002 is an frugal number, since it uses more digits than its factorization.

15225474002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174504 (or 87253 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

Multiplying 15225474002 by its sum of digits (32), we get a square (487215168064 = 698008²).

The spelling of 15225474002 in words is "fifteen billion, two hundred twenty-five million, four hundred seventy-four thousand, two".