15225755215 has 16 divisors (see below), whose sum is σ = 20043262080. Its totient is φ = 11011407520.

The previous prime is 15225755213. The next prime is 15225755219. The reversal of 15225755215 is 51255752251.

It is a happy number.

It is not a de Polignac number, because 15225755215 - 2¹ = 15225755213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225755213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763429 + ... + 783118.

It is an arithmetic number, because the mean of its divisors is an integer number (1252703880).

Almost surely, 2^15225755215 is an apocalyptic number.

15225755215 is a deficient number, since it is larger than the sum of its proper divisors (4817506865).

15225755215 is a wasteful number, since it uses less digits than its factorization.

15225755215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546742.

The product of its digits is 175000, while the sum is 40.

The spelling of 15225755215 in words is "fifteen billion, two hundred twenty-five million, seven hundred fifty-five thousand, two hundred fifteen".