7715520442225 has 12 divisors (see below), whose sum is σ = 10070784577840. Its totient is φ = 5847552334800.

The previous prime is 7715520442183. The next prime is 7715520442243. The reversal of 7715520442225 is 5222440255177.

It is not a de Polignac number, because 7715520442225 - 2¹⁷ = 7715520311153 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8121599991 + ... + 8121600940.

Almost surely, 2^{7715520442225} is an apocalyptic number.

It is an amenable number.

7715520442225 is a deficient number, since it is larger than the sum of its proper divisors (2355264135615).

7715520442225 is a wasteful number, since it uses less digits than its factorization.

7715520442225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16243200960 (or 16243200955 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 46.

The spelling of 7715520442225 in words is "seven trillion, seven hundred fifteen billion, five hundred twenty million, four hundred forty-two thousand, two hundred twenty-five".