7540408567225 has 12 divisors (see below), whose sum is σ = 9672524094060. Its totient is φ = 5824315582400.

The previous prime is 7540408567163. The next prime is 7540408567231. The reversal of 7540408567225 is 5227658040457.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 314161371001 + 7226247196224 = 560501^2 + 2688168^2 .

It is not a de Polignac number, because 7540408567225 - 2³³ = 7531818632633 is a prime.

It is a super-2 number, since 2×7540408567225² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5200281046 + ... + 5200282495.

It is an arithmetic number, because the mean of its divisors is an integer number (806043674505).

Almost surely, 2^{7540408567225} is an apocalyptic number.

It is an amenable number.

7540408567225 is a deficient number, since it is larger than the sum of its proper divisors (2132115526835).

7540408567225 is a wasteful number, since it uses less digits than its factorization.

7540408567225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10400563580 (or 10400563575 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 55.

The spelling of 7540408567225 in words is "seven trillion, five hundred forty billion, four hundred eight million, five hundred sixty-seven thousand, two hundred twenty-five".