45225252013521 has 16 divisors (see below), whose sum is σ = 61594922707200. Its totient is φ = 29503116348288.

The previous prime is 45225252013517. The next prime is 45225252013631. The reversal of 45225252013521 is 12531025252254.

It is not a de Polignac number, because 45225252013521 - 2² = 45225252013517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45225252013521.

It is not an unprimeable number, because it can be changed into a prime (45225252013021) 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, 29459236 + ... + 30956373.

It is an arithmetic number, because the mean of its divisors is an integer number (3849682669200).

Almost surely, 2^{45225252013521} is an apocalyptic number.

It is an amenable number.

45225252013521 is a deficient number, since it is larger than the sum of its proper divisors (16369670693679).

45225252013521 is a wasteful number, since it uses less digits than its factorization.

45225252013521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60420968.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 45225252013521 its reverse (12531025252254), we get a palindrome (57756277265775).

The spelling of 45225252013521 in words is "forty-five trillion, two hundred twenty-five billion, two hundred fifty-two million, thirteen thousand, five hundred twenty-one".