7521040225557 has 16 divisors (see below), whose sum is σ = 11143347156480. Its totient is φ = 5013547413696.

The previous prime is 7521040225537. The next prime is 7521040225579. The reversal of 7521040225557 is 7555220401257.

7521040225557 is a `hidden beast` number, since 7 + 5 + 210 + 402 + 25 + 5 + 5 + 7 = 666.

It is not a de Polignac number, because 7521040225557 - 2¹⁹ = 7521039701269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7521040225537) 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, 13029028 + ... + 13594029.

It is an arithmetic number, because the mean of its divisors is an integer number (696459197280).

Almost surely, 2^{7521040225557} is an apocalyptic number.

It is an amenable number.

7521040225557 is a deficient number, since it is larger than the sum of its proper divisors (3622306930923).

7521040225557 is a wasteful number, since it uses less digits than its factorization.

7521040225557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26633529 (or 26633523 counting only the distinct ones).

The product of its (nonzero) digits is 980000, while the sum is 45.

The spelling of 7521040225557 in words is "seven trillion, five hundred twenty-one billion, forty million, two hundred twenty-five thousand, five hundred fifty-seven".