540256644625 has 32 divisors (see below), whose sum is σ = 718449073056. Its totient is φ = 404190259200.

The previous prime is 540256644583. The next prime is 540256644637. The reversal of 540256644625 is 526446652045.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 169006498816 + 371250145809 = 411104^2 + 609303^2 .

It is not a de Polignac number, because 540256644625 - 2¹⁷ = 540256513553 is a prime.

It is a super-2 number, since 2×540256644625² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476052 + ... + 1143301.

It is an arithmetic number, because the mean of its divisors is an integer number (22451533533).

Almost surely, 2^540256644625 is an apocalyptic number.

It is an amenable number.

540256644625 is a deficient number, since it is larger than the sum of its proper divisors (178192428431).

540256644625 is a wasteful number, since it uses less digits than its factorization.

540256644625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619542 (or 1619532 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 540256644625 in words is "five hundred forty billion, two hundred fifty-six million, six hundred forty-four thousand, six hundred twenty-five".